Isocast

Isocast is a free, open-source screen recorder and streaming app for macOS that saves each source as a separate file.

Isocast is a screen recorder and streaming application built for macOS on Apple silicon. It functions similarly to OBS Studio by offering scenes, sources, transitions, an audio mixer, and Studio Mode, while recording every screen, window, and camera as a separate full-quality file on a single clock. It imports existing OBS scene collections and profiles, and responds to obs-websocket tools. Written in Rust under MIT or Apache 2.0 licenses, it includes a built-in timeline editor for trimming and exporting ISO files, a replay buffer, a virtual camera, and multi-destination streaming. It also supports the isocast command-line interface and MCP tools for automation by AI agents.

Isocast at a glance

Best for: Software engineer
Runs on: macOS, API, CLI
Pricing: Free
Released: October 2026
Category: AI productivity tool
Website: github.com/r44vc0rp/isocast

Key features

Scenes and sources with filters and an audio mixer
ISO recording with separate files per source and session files
Crash-safe takes with automatic half-second commits and repairs
Editor window with timeline, trim, split, ripple delete, and angles
Replay buffer saving the last 5 to 300 seconds of program video
Virtual camera for Zoom, Meet, FaceTime, and other apps
Streaming to Twitch, YouTube, Kick, Facebook, or RTMP servers
obs-websocket v5 compatibility for remotes and plugins

Use it for

Record a screen, windows, and cameras into separate files for editing
Import existing OBS scene collections and profiles into a lighter app
Stream to multiple RTMP destinations simultaneously
Automate recording and streaming tasks using the CLI and MCP tools

Alternatives to Isocast

Glance for Mac — It brings live scores media controls and command approvals directly to the Mac notch.
PocketWebTools for Mac — Runs local AI models up to 35B parameters fully offline on Apple Silicon Macs.
Calíope — It brings a full database workspace to every Apple screen with native widgets and schema-aware AI.
Whytap — Runs locally with zero telemetry and lets users bring their own API keys.
Raycast — It combines system commands, extensions, and AI into one fast keyboard launcher.
OpenUsage — Monitors AI usage limits locally to prevent service interruptions.
LocalBolo — Private, on-device dictation that works in any app without cloud data usage.
Openbroca — AI cleanup and translation turn messy speech into ready-to-send text directly in your apps.
Letra — Copies any text on your screen instantly with a single keyboard shortcut.
Screenpipe — It provides long-term memory for teams and AI agents while keeping raw history local.

All Isocast alternatives