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OpenLeaderboard

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What OpenLeaderboard is

OpenLeaderboard is a free, open-source API for game developers who need to receive scores and return player rankings. It supports global all-time, daily, weekly, monthly, seasonal, segmented, friends, and neighbor boards. Developers can choose ascending or descending scoring, best, last, or increment updates, and lexical or first-to-reach tie-breaking. Queries include top-N, pagination, individual ranks, neighbors, and explicit friends. SDKs are documented for Go, Unity/C#, and TypeScript, alongside a REST API using the /v1 base path. Submissions are durably logged and ranked asynchronously, typically within milliseconds according to the documentation. Rank reads are described as O(log N), with optional approximate ranks for very large boards while top-N and neighbor results remain exact. The project supports HMAC-signed submissions, self-hosting, and a Docker quickstart. Daily windows reset at UTC midnight.

Who it suits

It suits game developers building scoreboards across web, Unity, Node.js, Docker, AWS, or self-hosted environments. Teams can configure seasons, segments, scoring rules, and optional submission signing.

What it does well

  • Many time-based and segmented board types
  • Go, Unity/C#, and TypeScript SDKs
  • Top-N, rank, neighbor, and friends queries
  • Optional HMAC score signing
  • Self-hosting with Docker quickstart

What to know first

  • Daily boards reset at UTC midnight
  • Per-board time zones are unavailable
  • Performance figures are an indicative local run

Verdict

OpenLeaderboard provides configurable ranking mechanics and several integration options under Apache-2.0. Its UTC-only daily windows are the main documented constraint for time-based boards.

Facts from OpenLeaderboard's own pages

Anti-cheat
Apps can optionally require HMAC-signed score submissions, with timestamp and nonce checks. · openleaderboard.app, 3 Oct 2026
Authentication
Game clients authenticate with an app API key, and the dashboard uses an account session. · openleaderboard.app, 3 Oct 2026
Benchmark caveat
The site labels its performance figures as an indicative local run on Docker Redis, not a production benchmark. · openleaderboard.app, 3 Oct 2026
Board types
It supports global all-time, daily, weekly, monthly, seasonal, segmented, friends, and neighbor leaderboards. · openleaderboard.app, 3 Oct 2026
Infrastructure
The documented ranking tier uses Redis sorted sets, with Redis Streams or Kinesis shown for durable ingestion. · github.com, 3 Oct 2026
Known limitation
Daily windows reset at UTC midnight, and the documentation says per-board time zones are not yet supported. · openleaderboard.app, 3 Oct 2026
License
The project is open source under the Apache-2.0 license. · openleaderboard.app, 3 Oct 2026
Member queries
The API supports top-N, paginated, individual-rank, neighbours, and explicit-friends queries. · openleaderboard.app, 4 Oct 2026
Open source license
The site identifies the project as open source under Apache-2.0. · openleaderboard.app, 4 Oct 2026
Product
OpenLeaderboard is an open-source leaderboard API for game developers. · openleaderboard.app, 4 Oct 2026
Ranking
The documentation says rank reads are O(log N), while very large boards can enable approximate rank estimates; top-N and neighbor results remain exact. · openleaderboard.app, 3 Oct 2026
Rankings
The service supports global all-time rankings and daily, weekly, monthly, and seasonal windows. · openleaderboard.app, 4 Oct 2026
REST API
The REST API uses the /v1 base path and accepts API-key authentication for board endpoints. · openleaderboard.app, 4 Oct 2026
Scale
The site says exact rank reads are O(log N) and describes an optional approximate-rank mode for very large boards. · openleaderboard.app, 4 Oct 2026
Score processing
Score submissions are durably logged and ranked asynchronously, typically within milliseconds. · openleaderboard.app, 3 Oct 2026
Scoring options
Boards can use higher- or lower-score wins, best/last/increment update policies, and lexical or first-to-reach tie-breaking. · openleaderboard.app, 3 Oct 2026
Scoring rules
Boards can configure ascending or descending order, best, last, or increment update policies, and lexical or first-to-reach tie-breaking. · openleaderboard.app, 4 Oct 2026
SDKs
The site documents Go, Unity/C#, and TypeScript SDKs. · openleaderboard.app, 4 Oct 2026
Segments
Boards can be segmented by region, platform, or another cohort key supplied with a score. · openleaderboard.app, 4 Oct 2026
Self-hosting
The project can be self-hosted, and its repository documents a Docker quickstart. · github.com, 3 Oct 2026
Submission security
Apps can require HMAC-signed score submissions as an optional anti-cheat measure. · openleaderboard.app, 4 Oct 2026
Time-zone limitation
Daily windows reset at UTC midnight, and the documentation says per-board time zones are not available. · openleaderboard.app, 4 Oct 2026
What it does
OpenLeaderboard is an open-source leaderboard API for game developers to submit scores and retrieve player rankings. · openleaderboard.app, 3 Oct 2026
Write processing
Score submissions are durably logged and ranked asynchronously, typically within milliseconds, according to the documentation. · openleaderboard.app, 4 Oct 2026

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