head to head · open source
Grafana Loki vs tslog
Grafana Loki has 29,124 GitHub stars, 4,174 forks, 1,620 open issues and last shipped yesterday. tslog has 1,753 stars, 74 forks, 0 open issues and last shipped 2 days ago. Grafana Loki leads on adoption by 1,561% (29,124 vs 1,753 stars). Grafana Loki is written in Go under AGPL-3.0; tslog is written in TypeScript under MIT. Grafana Loki has attracted 14% as many forks as stars, tslog 4%. Grafana Loki was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (logging), so they are genuine substitutes rather than adjacent tools.
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
| Grafana Loki | tslog | |
|---|---|---|
| GitHub stars | ★ 29K | ★ 1.8K |
| License | AGPL-3.0 | MIT |
| Written in | Go | TypeScript |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 4.2K | ⑂ 74 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Grafana Loki if
- You weight community size — 29K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick tslog if
- You want the tslog feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and tslog fits your workflow better
About Grafana Loki
Loki: like Prometheus, but for logs. Loki is a horizontally scalable, highly available, multi tenant log aggregation system inspired by Prometheus. It is designed to be very cost effective and easy to operate. It does not index the contents of the logs, but rather a set of labels for each log stream. Compared to other log aggregation systems, Loki: does not do full text indexing on logs. By storing compressed, unstructured logs and only indexing metadata, Loki is simpler to operate and cheaper to run. indexes and groups log streams using the same labels you’re already using with Prometheus, enabling you to…
read the full Grafana Loki overview →
About tslog
Beautiful logging experience for TypeScript Powerful, fast and expressive logging for TypeScript and JavaScript [!NOTE] This is tslog v5. It is a deliberate, breaking redesign — ESM only, grouped settings, a new fields first JSON shape, and middleware instead of overwrite. . If you are on the 4.x line, 4.11.0 is a safe place to stay — most of the v5 performance wins were back ported there with zero breaking changes. Upgrade when you want the new capabilities. See Upgrading from v4? . Highlights 🏗 Universal — one logger for Node.js, browser, Deno, Bun, workers and React Native 🧱 Structured, fields first JSON —…
read the full tslog overview →
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Frequently asked questions
Is Grafana Loki or tslog more popular?
Grafana Loki has 29,124 GitHub stars and tslog has 1,753. Grafana Loki has the larger community by that measure.
Are Grafana Loki and tslog free?
Both are open source. Grafana Loki is licensed under AGPL-3.0 and tslog under MIT. Neither carries a licence fee.
What is the difference between Grafana Loki and tslog?
Grafana Loki is written in Go and tslog 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, Grafana Loki or tslog?
Choose Grafana Loki if you want the larger community (29,124 stars) or its AGPL-3.0 licence terms. Choose tslog if its feature set, stack or MIT licence fits better. Both are self-hostable.