🔧Utilities

7TV

An extension platform that adds custom emotes to Twitch and Kick chat. You can manage up to 1,000 emote slots per channel, with support for grouping and sharing sets, plus lightweight delivery via WebP/AVIF. It comes with a browser extension, mobile app, and chatbot, and is free to use at its core. Note that emotes are only visible to viewers who have the 7TV extension installed.

Advanced Scene Switcher

A plugin that automates scene switching and source control in OBS Studio. You can register Conditions and Actions together as "Macros," using triggers like audio level, cursor position, date/time, hotkeys, media playback state, or process launch status to run scene switches, source show/hide, audio output control, and even HTTP requests — all hands-free. Works on Windows, Mac, and Linux, and is free and open source under the GPL-2.0 license.

Aitum Vertical (Vertical Canvas)

A free plugin that adds a vertical canvas to OBS Studio (its GitHub project name is Vertical Canvas). While streaming in landscape, you can build a separate vertical layout and output it as a stream or recording at the same time. GPL-2.0 open source, made for anyone who wants to prepare vertical video for TikTok or YouTube Shorts alongside their regular stream.

Bitfocus Companion

A free, open-source app that lets you control OBS, vMix, ATEM, and 700+ other devices and software from a controller like an Elgato Stream Deck. Assign scene switching, recording start, and more to a single button, consolidating the controls for a multi-device stream setup onto one panel.

棒読みちゃん (Bouyomi-chan)

A staple free tool for reading Japanese text aloud with synthesized speech. It bundles the AquesTalk speech synthesis engine and needs no installation — just unzip and run. It comes with an external integration interface, so pairing it with a comment viewer like OneComme or Multi Comment Viewer lets it automatically read out stream comments. This Windows tool also supports clipboard monitoring and switching to SAPI5 voices. Check the distributor's listing for the commercial-use conditions of the bundled speech engine.

Camo Studio

An app that turns your iPhone, Android phone, or DSLR/mirrorless camera into a high-quality webcam. It works on Mac and Windows and outputs as a virtual camera to 40+ apps including OBS Studio and Discord, with built-in background blur and color adjustment. The free version goes up to 720p (no watermark or ads), while Pro unlocks 4K.

CastCraft

A free comment viewer and stream effects tool for YouTube and Twitch. First-time viewers are marked with a "NEW" label, and each viewer's chat history, notes, and visit count are automatically tracked, making it easier to call out regulars by name. It comes with everything you need: chat TTS integration with Bouyomi-chan and VOICEVOX, "Chatbox" for displaying chat in OBS, and "Screen" for on-screen effects like fireworks triggered by chat or tips. It's completely free and even has its own tipping feature with a 90% payout rate.

Chatty

An IRC-client-style chat app built specifically for Twitch. It supports multi-channel tab management, chat log recording, message highlighting, detailed color and font settings, and FrankerFaceZ / BetterTTV emote display. It's completely free and open source, and runs anywhere Java 8 or later is available. The UI is English-only.

Complete OBS Setup & Test Stream Support (たにした | Coconala)

A Coconala listing offering remote help with OBS initial setup, YouTube/Twitch/Twitcasting integration, video and audio output testing, and picture/sound quality tuning matched to your PC and connection. The base plan is 90 minutes of setup support, with mic quality improvement, capture card wiring, 2-PC setups, and subtitle/translation display available on request via a quote consultation. Great for anyone who wants to work through pre-first-stream nerves or gear trouble together over screen share. A quote consultation also lets you confirm the scope of your issue beforehand.

Crowd Control

A viewer-participation service where viewers spend coins to trigger effects inside a game, letting them interfere with the streamer's play in real time. Works with Twitch, YouTube, TikTok, and more, with supported titles offered as "Game Packs." Streamers can get started for free (a paid Pro plan adds extra features), and viewer coin purchases become revenue for the streamer.

DaVinci Resolve

A professional-grade video production suite used on Hollywood sets, bundling cut editing ("Cut/Edit"), compositing ("Fusion"), color grading ("Color"), audio editing ("Fairlight"), and export ("Deliver") into one app. Even the free version handles Ultra HD (3840×2160) at 8-bit/60fps, plenty for stream clips and highlight reels. Need 10-bit/120fps or AI features? You can upgrade to the one-time-purchase Studio edition ($295).

Discord

A free communication tool that combines text, voice, and video calls in one place. Streamers can create fan community servers for everyday interaction, or connect via voice call with guests for collab streams. It works on Windows, Mac, and mobile, and its role feature lets you distribute member-only perks — a staple service for the streaming community.

Discord Streamkit Overlay

An official overlay generator from Discord for streaming. Open streamkit.discord.com/overlay in your browser, configure one of the three widget types — Status, Chat, or Voice — and it issues a URL you can simply paste into an OBS browser source. It can show icons for who's currently talking, or scroll messages from a text channel across your screen. Everything happens in the browser, with no extra install and no cost.

Elgato Stream Deck

A streaming controller with 15 LCD keys that let you switch scenes, trigger sound effects, and launch apps at the tap of a button. With OBS integration and shortcut assignments across multiple apps, it cuts down on operational slip-ups mid-stream and keeps your show running smoothly — a hardware device trusted by streamers everywhere.

Fantia

A creator-support platform for illustrators, cosplayers, VTubers, and more. You can set up free and paid plans to publish exclusive content, plus sell plan-exclusive merchandise and take commission requests from fans. Registration is free. Sales commission is 12.5% for non-photographic content and 17.5% for photographic content, plus a ¥330 transfer fee. Content ranges from all-ages to R18, so pay attention to zoning (operated by Toranoana).

Firebot

An all-in-one streaming bot for Twitch. Chat commands, event triggers, a currency system, timers, and moderation can all be built with a no-code "effects" system. It also integrates with Streamlabs and Discord, and it's completely free, open-source software under GPL-3.0.

はいしんツールキット

A web platform bundling handy tools for streamers, including a stream timer, countdown, and telop (caption) generator, all usable right in your browser. Many of the tools can be loaded into OBS's browser source, letting you enrich your stream production without installing multiple apps.

Highlight Analyzer

A Chrome extension that analyzes YouTube and Twitch stream archives to automatically detect clip-worthy moments based on chat excitement and laughter comments. It also includes chapter generation and note-taking features, dramatically cutting down the time it takes to make clip videos.

lit.link

A Japan-based link-in-bio service (operated by TieUps Inc.) that lets you gather links to your social accounts, videos, music, and shop into one page. Its block-based builder makes intuitive design possible from just a smartphone, with hundreds of preset backgrounds and icons to choose your look. Core features are free, and you can have a page live after about a minute of sign-up. The paid lit.link Plus tier adds advanced customization like custom share images, animated backgrounds, opening covers, an original logo, and extra fonts. A go-to service in Japan with 4 million registered users.

LiveCap

Software that transcribes what a streamer says in real time and auto-translates it into subtitles in up to 16 languages — even from Japanese into English. It integrates via a simple OBS browser source and runs fully locally with minimal delay, great for streamers who want to reach viewers overseas (one-time purchase, ¥2,000).

Logitech Capture

Free streaming and recording software for Logitech webcams. It lets you fine-tune your camera's field of view, color, and exposure, and supports switching between multiple sources as well as vertical video capture. A handy tool for webcam streamers who want to bring high-quality camera footage into OBS.

Lumia Stream

A streaming support app that bundles smart lighting integration, alerts, a chat bot, and loyalty features into one tool. It connects to 40+ devices and services including Philips Hue, Nanoleaf, Govee, and Elgato, letting viewers control your room lighting and effects through chat. The free tier is limited to overlays and a basic bot; full functionality starts at $5.99/month.

Macro Deck

A free, open-source tool that turns your phone, tablet, or browser into a Stream Deck-style macro pad. It supports Windows 10/11, and installing the OBS-WebSocket plugin lets you switch scenes or mute your mic with a single tap. Unlike Touch Portal, every feature is free, and you can even control it from a browser with no dedicated app needed.

マシュマロ

A fan-mail service for receiving anonymous messages from viewers, with a filter for malicious messages — a go-to way to gather material for chatting or advice streams. Free at its core; Premium (¥550/month, tax included) adds ad-free browsing and a 10,000-character answer limit.

Mix It Up

A free, open-source stream bot that supports Twitch, YouTube, and Trovo. You can finely configure chat commands, notifications, mini-games, and viewer-participation point systems, and it can even trigger effects through OBS integration. It's highly flexible, making it a great fit for anyone who wants to make their stream more interactive.

Yukkuri MovieMaker4

Free video editing software built for making Yukkuri commentary videos. Type in text and the characters read it aloud, while you edit character art, subtitles, and sound effects all in one place. Pair it with VOICEVOX for a completely free commentary-video workflow, popular with video-editing beginners too.

Multi Comment Viewer

A free comment viewer that displays comments from YouTube Live, Twitch, Niconico Live, Twitcasting, OPENREC, Fuwacc, and Kick all in one place. It can connect to multiple sites simultaneously, and integrates with Bouyomi-chan for text-to-speech readout. It also supports plugins for extending functionality, and gets updated frequently.

Nightbot

A free chatbot that automatically manages Twitch and YouTube chat. It posts scheduled messages, responds to commands, and auto-moderates troll comments, cutting down significantly on the effort of managing chat during a stream. It's a well-established tool from overseas that works fine with Japanese comments too.

Composite Blur (OBS Plugin)

A free plugin that adds high-quality blur filters to OBS. It includes multiple blur algorithms and effect types, useful for background blur, masking part of the screen, privacy protection, and adding depth to your stream layout. It's published on GitHub and installs as an OBS video filter with fine-grained controls. Because you can apply it to just the sources or areas you need instead of the whole screen, it's easy to protect sensitive information while keeping your layout looking good.

OBS Discord Icon Appearance Generator

A free generator that lets you change how Discord call members' icons look inside OBS. Fine-tune the speaking ring's color, shape, and size, then just paste the generated URL into an OBS browser source to apply it. It helps give collab stream screens a unified look.

OBS Discord Voice Chat Character Art Generator

A free generator that shows your Discord call partners' full-body character art on your OBS screen, reacting to whoever is speaking. This makes collab streams and multi-person chats easy to follow visually. Just set the generated URL as an OBS browser source — no complicated setup needed.

Source Record

A free plugin that lets you record individual OBS sources separately. Capture just the game screen or just the camera alongside your regular stream, useful for building clip and thumbnail material. Added as a filter, and free and open source under GPL-2.0 (by exeldro).

お題箱

A service for collecting topics, requests, and questions anonymously from fans. Restrict submissions to logged-in users or filter NG words to keep out trolls, and there's also a "Topic Gacha" for pulling a random prompt. Supports switching between multiple accounts, and most features are free (an ad-free premium tier is ¥380/month).

OneComme

A free comment viewer that combines chat from major streaming sites like YouTube, Twitch, and Niconico Live into one display. It also includes chat TTS and a queue list for viewer participation games, and setup is as easy as dragging and dropping the stream URL — a homegrown Japanese tool prized for its simplicity.

OpusClip (Opus Clip)

A clip-generation service where AI analyzes long stream archives and automatically pulls out the highlights as vertical short-form videos. It supports Japanese audio and auto-captions, reformatting clips to a 9:16 ratio for TikTok and YouTube Shorts. The free plan covers up to 60 minutes of processing per month.

Photopea

A free image editing tool that runs entirely in your browser. It opens and edits many formats — PSD, AI, XD, Figma, SVG, PDF, RAW (DNG/CR2/NEF, etc.) — with no install needed, and since files are processed on your own device, nothing gets uploaded to the cloud. It matches Photoshop-level features like layers, masks, layer styles, smart objects, and adjustment layers, plus AI tools for one-click background removal and replacing parts of an image from a text prompt. The free version shows ads; Premium removes them and adds more.

Pulsoid

A widget service that shows your heart rate from a smartwatch or heart-rate sensor on your stream screen in real time. Just connect the Pulsoid app to a supported device and add it to OBS or Streamlabs as a browser source, and you can show viewers the tension of a horror game, an endurance stream, or physical changes during a workout stream. Since you can try it on the free plan, it's an easy addition even if you just want to layer in a bit of extra flair. The widget's look can be adjusted to match your stream layout, so you can add it to a segment without redesigning your existing assets.

Restream

A multistreaming service that broadcasts simultaneously to platforms like Twitch, YouTube, and TikTok. It consolidates chat from every site into one screen, and you can go live using just the browser-based Studio, no extra software required. A go-to pick for streamers who want to reach viewers everywhere.

サムネAI

A tool that generates stream and video thumbnails in seconds just by typing in some text for the AI. It supports 16 templates covering VTuber, game streaming, and more, and you can keep refining the result afterward just by telling the AI what to change. The free plan includes up to 3 credits.

SFAKit (Fan Art Submission System)

A tool for safely receiving fan art from viewers through an approval system, then displaying it as a slideshow on your stream via an OBS browser source. Submitters don't need an account — they can send images through a passphrase-protected URL. Admins log in with a Google account and can display only approved images in real time.

Social Stream Ninja

A free, open-source tool that aggregates chat from multiple services — YouTube, Twitch, TikTok, Discord, and more — and displays the comments you pick as an OBS overlay. Since it runs in the browser, setup is lightweight, and it's easy to manage chat from multiple platforms or guest streams in one place. You can also use it to feature selected comments on screen. Because it's built around links you generate from the official site, you can start doing chat effects without setting up a dedicated server.

Spout2

A Windows-only framework for sharing video between apps in real time over the GPU. It lets you bring avatar apps like VTube Studio into OBS without a green screen, with near-zero latency and low CPU load.

StreamElements

A free streaming support platform that bundles alerts, overlays, a chatbot, and tips/donations all in one place. With over 100 animated alerts you can customize in a visual editor, you can pull together a polished-looking stream setup in no time — no need to outsource the design.

Streamer.bot

A highly capable streaming support tool that lets you build your own automation with C# scripts. This free software offers advanced customization such as multi-chat integration across Twitch, YouTube, and Kick, OBS integration, and voice commands, solidly supporting advanced streamers from behind the scenes.

StreamUP

A helper utility plugin for OBS. It bundles support for checking updates to your installed plugins, tidying up scenes, custom docks, and added hotkeys — all aimed at maintaining your setup and improving usability. It's a free tool that makes it easier to clean up for streamers who've used OBS for a long time and built up a lot of scenes and plugins, and it's well suited to anyone who wants a smoother pre-stream check and fewer mistakes on air. Since it's free, it's easy to try out just the management features without disrupting the OBS setup you already have.

TikFinity

A free interaction tool for TikTok LIVE. Trigger sound effects, overlays, goal gauges, and text-to-speech off gifts and follows, and plug it straight into OBS Studio or Streamlabs. It's an unofficial third-party tool, so it can be affected by changes TikTok makes on its end.

Tobii Eye Tracker 5

A head- and eye-tracking device that clips onto your PC monitor. No headset needed — it works with 270+ games, letting you control the in-game camera with natural head movement. For streamers, Tobii Ghost can visualize your gaze on screen. Priced at $279 (refurbished units are $229). It's not meant for driving an avatar — the main uses are gaze visualization and in-game camera control.

Touch Portal

A remote control tool that turns your phone or tablet into a Stream Deck-style macro pad. Connect the desktop app (Windows/Mac/Linux) and mobile app (iOS/Android) over the same network, then switch OBS scenes, mute audio, or start recording with one tap from your phone. Beyond official OBS, Streamlabs, and Twitch integrations, the Pro version unlocks plugins for Discord, Spotify, Voicemod, and more. The free version is capped at 2 pages of a 4x2 grid; Pro is a one-time $13.99 purchase.

Tuna

A free OBS plugin that displays the currently playing track title, artist, and cover art on your stream. It works with Spotify and various media players, letting you show 'Now Playing' info without launching a separate app. Handy for anyone who wants to show track info during work streams or music streams.

UD Talk

A communication support app that captions conversations in real time via speech recognition, with automatic translation too. Available on iOS, Android, and the Amazon Appstore, free even for commercial use (paid plans exist for businesses/events). Over 1 million downloads, adopted by 1,000+ organizations. Showing captions on your stream needs a workaround like window capture, since there's no direct OBS integration.

VDO.Ninja

A completely free service that uses WebRTC to share low-latency video and audio between browsers. No account signup or app install needed — just send a link, and you can pull a collab partner's camera or your own phone's camera straight into OBS as a browser source. Group rooms support up to about 30 people, and it's packed with features like screen sharing, virtual backgrounds, a whiteboard, and remote OBS control. It's an open project that states clearly it doesn't collect personal data.

VoiceMod

A real-time voice changer with over 200 voices built in. It runs as a virtual mic (Voicemod Virtual Microphone), so you just set it as the input device in Discord, OBS, VRChat, or any game to carry your transformed voice through. It also comes with a soundboard for instantly playing meme sounds and sound effects via keybinds, plus Voicelab for creating and customizing your own voices. You can start with the free version, and unlocking all voices and more requires the Pro version (in-app purchase).

Vrew

AI video editing software that auto-generates subtitles via speech recognition and lets you cut edit simply by deleting text. It supports over 500 AI voices and translated subtitles in more than 100 languages, making it useful for producing clips from stream archives. Works on Windows/Mac/Ubuntu, with a free plan available (paid tiers run on a credit system).

ゆかりねっとコネクターNEO

A subtitle tool that captions your stream audio live and translates it into multiple languages for OBS. It integrates with OneComme, VRChat, and Discord, letting individual streamers offer live multilingual subtitles for international viewers. Core features are free; a supporter version with higher-accuracy translation is available through FANBOX.