logto-io/logto
🧑🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.
Open-source auth infrastructure built for AI agent platforms too — Logto handles OIDC, OAuth 2.1, and SAML with multi-tenancy, enterprise SSO, and RBAC out of the box, saving teams from wiring up these protocols themselves. It ships pre-built sign-in flows and SDKs for 30+ frameworks, and notably works out-of-the-box with Model Context Protocol and agent-based AI architectures, making it fit for both SaaS and emerging AI app stacks.
Metrics
Retention can be computed 30 days after a repository first trends (it isn't shown until then). See About for how each metric is defined.
Star growth and Trending appearances (last 30 days)
Bands mark days on the trending list (darker = higher rank)
Daily trending ranks as a table (1 days)
| Date | Daily |
|---|---|
| Oct 24, 2026 | typescript #7 +12 |
Created Jun 19, 2021 · First on trending Oct 24, 2026
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Rank within email
| # | Repository | ★ |
|---|---|---|
| 1 | Billionmail/BillionMail | 15,967 |
| 2 | megadose/holehe | 15,429 |
| 3 | logto-io/logto | 14,809 |
| 4 | elie222/inbox-zero | 12,847 |
| 5 | reacherhq/check-if-email-exists | 10,319 |
| 6 | tutao/tutanota | 8,054 |
| 7 | Mailu/Mailu | 7,593 |
| 8 | macro-inc/macro | 5,459 |
| 9 | hieunc229/mailflare | 5,210 |
| 10 | marclou/mailcheap | 1,539 |