head to head · open source
worldmonitor vs effect
worldmonitor has 86,684 GitHub stars, 13,147 forks, 313 open issues and last shipped yesterday. effect has 16,097 stars, 747 forks, 253 open issues and last shipped yesterday. worldmonitor leads on adoption by 439% (86,684 vs 16,097 stars). worldmonitor is written in TypeScript under AGPL-3.0; effect is written in TypeScript under MIT. worldmonitor has attracted 15% as many forks as stars, effect 5%. effect was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| worldmonitor | effect | |
|---|---|---|
| GitHub stars | ★ 87K | ★ 16K |
| License | AGPL-3.0 | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 13K | ⑂ 747 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick worldmonitor if
- You weight community size — 87K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick effect if
- You want the effect feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and effect fits your workflow better
About worldmonitor
World Monitor is an open source, real time global intelligence dashboard in TypeScript that aggregates news with AI, monitors geopolitics and infrastructure, and unifies all of it into a single situational awareness interface for analysts, journalists, researchers, and operations teams who need cross domain awareness they can self host.
read the full worldmonitor overview →
About effect
Effect is a TypeScript library for building robust, maintainable, type safe, and production grade applications. It lives in the TypeScript and JavaScript ecosystem, distributed as the core effect package alongside a monorepo of integration packages that extend it. The project is MIT licensed, has been developed for roughly seven years, and currently ships Effect V4 as a release candidate, with the main branch holding v4 development and the v3 branch retaining the previous line.
read the full effect overview →
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Frequently asked questions
Is worldmonitor or effect more popular?
worldmonitor has 86,684 GitHub stars and effect has 16,097. worldmonitor has the larger community by that measure.
Are worldmonitor and effect free?
Both are open source. worldmonitor is licensed under AGPL-3.0 and effect under MIT. Neither carries a licence fee.
What is the difference between worldmonitor and effect?
worldmonitor is written in TypeScript and effect in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, worldmonitor or effect?
Choose worldmonitor if you want the larger community (86,684 stars) or its AGPL-3.0 licence terms. Choose effect if its feature set, stack or MIT licence fits better. Both are self-hostable.