Thymer is a beautiful editor to write, outline and plan at the speed of thought. Real-time multiplayer, malleable with plugins and themes, open to your agents through plain files. End-to-end encrypted, on web, desktop and mobile.
Sign up for the beta launch list and we'll email you your invite.
Designed from scratch, down to the cursor. A productive blend of outlining and long-form writing, with a focus on speed. Write and structure in one place, whether you're brainstorming a list or writing a doc. Works offline and online, solo or in teams. Smooth, no modes, a pleasure to write in.
The power of an IDE, for writers: jump anywhere from a command palette, see links to and from pages, work in two panels side by side, do everything from the keyboard, query down to a single line, embed parts of other docs, and fold sections of a doc or zoom into one part.
Turn anything in work or life into beautifully neat databases. From a project kanban to a table of artwork or a list of wiki docs. Just add properties to structure your notes.
Complete on day one, nothing to install. But everyone's workflow is different, so Thymer is malleable to fit yours. Change anything with plugins, or tell an AI agent what to change for you.
A polished real-time workspace, or plain files your tools and AI agents can work on? Turn on Markdown Mirror and have both: one live workspace shared by your team, your tools and your agents. Files as the API.
No need to choose between privacy or convenience. Thymer offers end-to-end encryption, even when collaborating in real time with a team. If that's not enough, you can host it yourself, or eject at any time. All brought to you by a proudly independent team with a focus on privacy and longevity.
No one, not even us, can read your data but you and the team members you choose to invite. Even the files and images you add are encrypted. There is no plaintext on our servers to scan, sell or train a model on.
Security white paper →Your data is cached on your device, with changes encrypted and then synced in the background. Always fast, no waiting for spinners. Keep working when offline.
Optionally download and self-host a server with a single file. Eject and switch between our cloud service and self-hosting anytime, with guaranteed access forever.
Download a full export whenever, and even import it back later. Easily track and view older versions. Automagic backups.
The navigation sidebar with the down arrow held. 1× actual speed.
You'll spend thousands of hours in your tools. They might as well be fun. Thymer brings the whimsical back with a change of scenery that helps you focus: vibe shifts, themes, effects and custom cursors.
We spent more than four years building Thymer from scratch, editor to sync engine, to get the tool we wanted without the usual trade-offs.
Long-form when you write, an outline when you plan. No modes.
Types like todo.txt, queries like a database.
End-to-end encrypted, even when collaborating in a team.
A nice UI for humans with file access for programs.
Everything works on day one. Reshape it with JavaScript when you want more.
Browser, macOS, Windows, Linux, iOS and Android. Automatic sync.
Our cloud or your own hardware. Switch whenever, eject anytime.
Use the full app when offline. Sync catches up when you land.
Notes, tasks and planning in one view.
Serious fun.
Yes. Thymer runs right in your browser, nothing to install. If you prefer an app, there is one for macOS, Windows and Linux.
It's also available on mobile. The mobile apps are in beta: iOS through TestFlight and Android through the Play Store's open testing. The mobile apps are here.
Free while we work out the details. We're thinking free forever including end-to-end-encrypted sync for personal use, and about $10 per user per month for commercial teams.
Yes. Thymer is real-time collaborative: one shared workspace where everyone edits together, with live cursors and presence. The workspace stays end-to-end encrypted however many people you invite. For separation and permissions you can have several workspaces on one account.
Because Thymer runs in the browser, nobody has to install anything to get started. A self-hosted option is coming soon for companies that need to run it on their own servers.
Have a specific business case in mind? We'd love to hear from you at [email protected].
Thymer plays well with your agents, and it is completely optional. Bring your own AI, an API key or a local model; there is no AI to be locked into. Point your agents at the Markdown Mirror folder or MCP and they work with your workspace, or run them inside Thymer from the AI Terminal. Whatever you use today, and whatever is popular a year from now.
Through files, agents or plugins. With Markdown Mirror on, your workspace is a folder on your disk, so anything that reads and writes files is an integration: scripts, cron jobs, your own tools, agents. Agents can also connect through MCP. Plugins reach anything with an API, and the community has already built dozens of integrations.
Even better, you won't need to: turn on Markdown Mirror and your whole workspace is a live, two-way synced folder of Markdown files on your disk, all the time. Or, if you prefer to download a .zip instead, go to Settings > Export. And Thymer is designed to be ejectable: you can leave at any time, and self-hosting is coming soon.
Yes, fully. Everything works offline and syncs in the background once you are back online. Nothing to toggle or prepare: get on a plane and keep working.
Your workspace is end-to-end encrypted. Pages, files and images are encrypted on your device before they sync, so nobody can read them but you and the people you invite, not even us. That also means we couldn't train a model on your notes even if we wanted to. The details are in the security white paper.
Diederik van Houten (@jdvhouten) and Wim Cools (@wcools). We have built profitable, bootstrapped software together for over a decade, and that is what funds Thymer. Editors go back a long way for us: we were working on block editors back in 2010, years before they were everywhere, and have learned a lot about the trade-offs since. This time we wanted to get it right, so we spent years building Thymer from the ground up, with no investors, and it is what we intend to work on for a long time. You can reach us at [email protected].