Directory

All Open Source Apps

Every app scored on repo health, technical quality, and dependency risk — before you install anything.

747 apps
Updated continuously
Java
70%
GPL 3.0

DataEase

AI Assistants · Analytics · Data Engineering

24,558

Open-source BI tool with drag-and-drop dashboards, 20+ data source connectors, and AI-powered natural language queries — a self-hosted alternative to Tableau.

View details
94
Repo Health
71
Technical
65
Dependency
Built with
Java 70%
Vue 29%
Updated 2 days ago
Rust
95%
Other

Databend

Data Engineering · Databases

9,452

Open-source enterprise data warehouse unifying analytics, vector search, full-text search, and AI agent orchestration in a single Rust-built engine on S3.

View details
93
Repo Health
84
Technical
77
Dependency
Built with
Rust 95%
Updated 2 days ago
Java
58%
Apache 2.0

Kestra

Automation · Data Engineering · Devops

28,388

Event-driven orchestration platform for data, AI, and infrastructure workflows — define everything in YAML, run anywhere at scale.

View details
93
Repo Health
81
Technical
72
Dependency
Built with
Java 58%
TypeScript 26%
Vue 15%
Updated 5 days ago
JavaScript
99%
GPL 3.0

homepage

Monitoring · Productivity

32,888

A fast, fully static, and secure self-hosted startpage with Docker service discovery and integrations for over 160 services.

View details
91
Repo Health
86
Technical
71
Dependency
Built with
JavaScript 99%
Updated 2 days ago
JavaScript
56%
MIT

Uptime Kuma

Monitoring

91,888

Self-hosted monitoring for every service you run — 23 monitor types, 95 notification channels, live dashboards, and public status pages with no vendor lock-in.

View details
91
Repo Health
81
Technical
62
Dependency
Built with
JavaScript 56%
Vue 41%
Updated 2 days ago
PHP
100%
Other

Cachet

Monitoring

15,251

The open-source, self-hosted status page system that keeps your users informed during outages and maintenance windows.

View details
88
Repo Health
67
Technical
75
Dependency
Built with
PHP 100%
Updated 1 weeks ago
Rust
52%
Apache 2.0

cocoindex

AI Development · Data Engineering

11,607

An incremental data indexing engine that keeps AI agent context perpetually fresh by reprocessing only what changed.

View details
87
Repo Health
85
Technical
65
Dependency
Built with
Rust 52%
Python 48%
Updated 2 days ago
Rust
91%
Apache 2.0

Quickwit

Monitoring · Search

11,682

Cloud-native search engine for logs and traces, delivering sub-second search directly on S3, GCS, or Azure Blob storage at a fraction of Elasticsearch's cost.

View details
87
Repo Health
83
Technical
73
Dependency
Built with
Rust 91%
Updated 5 days ago
Rust
86%
Other

Arroyo

Analytics · Data Engineering

5,039

A distributed stream processing engine written in Rust that lets you write SQL to run stateful, real-time computations over data streams with subsecond results.

View details
86
Repo Health
74
Technical
62
Dependency
Built with
Rust 86%
Updated 5 days ago
Rust
64%
Apache 2.0

Temps

Analytics · Devops · Monitoring

801

A self-hosted Rust PaaS that replaces Vercel, Sentry, PostHog, Pingdom, Resend, and E2B with one binary — plus 440+ CLI operations agents like Claude Code can drive directly.

View details
81
Repo Health
86
Technical
70
Dependency
Built with
Rust 64%
TypeScript 34%
Updated 2 days ago
JavaScript
92%
BSD 3

xyops

Automation · Monitoring

6,229

A unified, self-hosted platform for job scheduling, visual workflow automation, server monitoring, alerting, and incident response — built for teams who demand full ownership of their operations stack.

View details
78
Repo Health
74
Technical
76
Dependency
Built with
JavaScript 92%
Updated 5 days ago
Rust
99%
MIT

abtop

Developer Tools · Monitoring

3,669

Like htop, but for your AI coding agents — monitor Claude Code, Codex CLI, and OpenCode sessions, tokens, context windows, rate limits, and orphan ports all from one terminal screen.

View details
74
Repo Health
79
Technical
78
Dependency
Built with
Rust 99%
Updated 2 weeks ago
PHP
83%
AGPL 3.0

tirreno

Monitoring · Security

1,530

Embed security inside your product — detect threats, fraud, and abuse in real time at the application layer

View details
74
Repo Health
73
Technical
82
Dependency
Built with
PHP 83%
Updated 3 days ago
PHP
63%
AGPL 3.0

Hyvor Relay

AI Development · Devops · Monitoring

908

Self-hosted, open-source email API that automates DNS, manages SMTP delivery, and provides deep observability — replacing SES, Mailgun, and SendGrid with infrastructure you fully own.

View details
68
Repo Health
79
Technical
70
Dependency
Built with
PHP 63%
Svelte 23%
Go 11%
Updated 5 days ago
Rust
97%
Apache 2.0

Volga

Data Engineering

161

A Rust-based real-time data processing engine for AI/ML feature computation, built on Apache DataFusion and Arrow — positioned as an alternative to Flink, Spark, Chronon, and OpenMLDB with unified streaming, batch, and request-time execution.

View details
67
Repo Health
67
Technical
72
Dependency
Built with
Rust 97%
Updated 3 days ago
JavaScript
54%
MIT

GPU Hot

Devops · Monitoring

1,633

Real-time NVIDIA GPU monitoring dashboard — self-hosted, scale from 1 to 100+ GPUs with sub-second metrics and no cloud dependency.

View details
60
Repo Health
73
Technical
79
Dependency
Built with
JavaScript 54%
Python 34%
Updated 1 months ago
Java
34%
Apache 2.0

Enso

Analytics · Data Engineering · Low Code Platforms

7,441

A visual and textual programming platform for data prep and analysis where the node graph and the underlying Enso code are always perfectly in sync, built by an Alteryx co-founder on a GraalVM engine.

View details
59
Repo Health
90
Technical
61
Dependency
Built with
Java 34%
TypeScript 27%
Scala 26%
Updated 1 months ago
Rust
79%
Apache 2.0

TensorZero

Ab Testing Experimentation · AI Development · Monitoring

11,717

TensorZero unifies the LLM gateway, observability, evaluation, optimization, and experimentation stack behind a single OpenAI-compatible API, built in Rust for sub-millisecond p99 latency.

View details
53
Repo Health
87
Technical
69
Dependency
Built with
Rust 79%
TypeScript 15%
Updated 3 months ago
Rust
66%
GPL 3.0

Pipedash

Developer Tools · Devops · Monitoring

1,085

One dashboard to monitor, trigger, and cancel CI/CD pipelines across GitHub, GitLab, Jenkins, Tekton, Buildkite, ArgoCD, and Bitbucket — desktop, Docker, or iOS.

View details
50
Repo Health
64
Technical
73
Dependency
Built with
Rust 66%
TypeScript 33%
Updated 1 months ago

Join founders buildingwith open source

Opinionated takes, migration guides, cost-saving tips, and insights from the open source ecosystem.

Subscribe on Substack
Join 750+ subscribers