Blog
Guides and notes from JSystems
How to record your screen on Windows, which settings to pick, and what we are building next.
How JAgents keeps AI coding agents running through an app restart
What changed in the JAgents beta since launch. Terminal agents now keep working while JAgents restarts or updates, agents can restart the app themselves, switching agents in a thread hands off the context on its own, and the interface lost its status dots. Built with Claude Code running inside JAgents.
How to run several AI coding agents at once on Windows
Run Claude Code, Codex, Devin, Cursor, and other AI coding agents side by side on Windows 10 and 11 in one window, and let them message each other and hand off work, with JAgents, a free and open source agent manager.
Free screen recorders for Windows with no watermark
A plain comparison of the free ways to record your screen on Windows 10 and 11 without a watermark or time limit, including Snipping Tool, Xbox Game Bar, OBS Studio, ShareX, and Simple Recorder.
How Claude Opus 5.5 one-shotted most of JAgents, an AI agent manager
How JAgents, the next JSystems app, was built with Claude Opus 5.5, which produced a working app with about 90% of the core features in one shot. It is an agent manager where Claude Code, Codex, Devin, Cursor and others run in threads or terminals and talk to each other through a built-in MCP server.
How JSystems Moderator works: Discord bug reports read first by Jev
How we built JSystems Moderator, the Discord bot behind JSystems bug reports. Jev 1.13 reads every report and answers with probabilities, staff answer in private tickets, and the bot will be open source for self-hosting.
How to record a bug report video developers can use
A short checklist for recording a bug on Windows so the developer can see it, reproduce it, and fix it, with the settings to use in Simple Recorder.
How to record just one window on Windows 10 and 11
Record a single app window on Windows without your other windows, notifications, or taskbar in the video, using Simple Recorder or Xbox Game Bar.
How to record part of your screen on Windows
Record only a selected area of your screen on Windows 10 or 11, so the video leaves out the taskbar and other windows and stays readable on a phone.
How to record your screen with your voice on Windows
Record your screen and microphone together on Windows 10 or 11, check your mic level before you start, and fix a recording that has no sound.
How to report a bug in Simple Recorder and other JSystems apps
Bug reports for JSystems apps now go through the JSystems Discord server. Press Report a bug, fill in a short form, and talk to our staff in a private ticket.
Plugin App: build your own desktop app by asking an AI agent
A first look at Plugin App, a coming-soon Windows app where you describe a feature and an AI coding agent such as Devin, Cursor, Codex, Claude Code, or Gemini CLI builds it into the app as a plugin.
Screen recording settings: which frame rate and resolution to pick
When to record your screen at 24, 30, or 60 fps and at 720p, 1080p, or 1440p, so your video is sharp where it matters and the file stays small.