Open Source Projects using Cargo
A curated collection of the 149 best open source software using Cargo. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.
Graph database built for GraphRAG and multi-tenant AI apps
Stars
Stars growing quickly over the last 30 days10,499Last commit
1 day agoLicense
SSPL-1.0
Graph database using sparse matrix representation and linear algebra to deliver ultra-low latency Cypher queries, native multi-tenancy, and built-in GraphRAG support for AI applications.
Open Source Alternative to:
Secure desktop investment tracker for private wealth management
Stars
9,241Last commit
1 day agoLicense
AGPL-3.0
Wealthfolio is a simple, secure desktop app for tracking investments and managing your wealth without compromising data privacy.
Open Source Alternative to:
Terminal-native AI coding agent built on ZSH
Stars
7,635Last commit
14 hours agoLicense
Apache-2.0
AI coding harness that runs inside your terminal, mixes LLMs per task, and uses multi-agent architecture to handle large codebases without bloating context.
Open Source Alternative to:
Privacy-first CAPTCHA alternative with proof-of-work
Stars
Stars growing over the last 30 days8,149Last commit
1 day agoLicense
Apache-2.0
Lightweight open-source CAPTCHA solution using SHA-256 proof-of-work. 250x smaller than hCaptcha, fully customizable, and privacy-focused with zero telemetry.
Open Source Alternative to:
Self-hosted enterprise agent platform with real permissions
Stars
Stars growing quickly over the last 30 days6,997Last commit
8 hours agoLicense
MIT
Deploy AI agents inside your own infrastructure with document-grounded answers, computer use, and support for any AG-UI-compatible agent framework.
Open Source Alternative to:
Cloud-native data warehouse for lightning-fast analytics
Stars
9,477Last commit
11 hours agoLicense
Apache-2.0
Databend is an open-source, elastic cloud data warehouse built for high-performance analytics and seamless integration with popular data tools.
Open Source Alternative to:
Real-time observability for modern web applications
Stars
9,384Last commit
3 days agoLicense
Apache-2.0
Comprehensive monitoring solution offering error tracking, session replay, and performance insights for seamless debugging and optimization.
Open Source Alternative to:
Fast, flexible VPN replacement with zero-trust security
Stars
9,122Last commit
10 hours agoLicense
Apache-2.0
Replace your VPN with zero-trust access built on WireGuard. Fast, scalable network security with simple policies and identity provider integration.
Open Source Alternative to:
Unify vector search and graph traversals in one database
Stars
6,231Last commit
2 days agoLicense
Apache-2.0
Rust-built native graph-vector database combining vector similarity search and graph traversals. 10x faster development with unified architecture, sub-1ms queries.
Open Source Alternative to:
Unified observability database for metrics, logs, and traces
Stars
6,760Last commit
10 hours agoLicense
Apache-2.0
Cloud-native observability database unifying metrics, logs, and traces with sub-second queries, 50x cost reduction, and seamless OpenTelemetry integration.
Open Source Alternative to:
Auto-generated network diagrams that stay current
Stars
5,896Last commit
1 day agoLicense
AGPL-3.0
Discovers your network via SNMP, LLDP, and ARP, then builds and maintains L2/L3 topology diagrams, host inventories, and service dependency maps automatically.
Open Source Alternative to:
Desktop SQL client with built-in MCP for AI agent access
Stars
Stars growing over the last 30 days5,269Last commit
13 hours agoLicense
Apache-2.0
Desktop database client for PostgreSQL, MySQL/MariaDB, SQLite, and 14+ more databases, with a built-in MCP server, SQL notebooks, visual query builder, and a plugin system.
Open Source Alternative to:
Secure email, calendar and contacts with end-to-end encryption
Stars
8,039Last commit
13 hours agoLicense
GPL-3.0
Tuta offers encrypted email, calendar and contacts with quantum-resistant security, protecting your privacy without ads or tracking.
Open Source Alternative to:
Build stateful backends with in-memory actors
Stars
6,326Last commit
2 days agoLicense
Apache-2.0
Open-source infrastructure for long-lived, in-memory processes called Actors. Combines state and compute with sub-millisecond latency, realtime capabilities, and horizontal scaling.
Open Source Alternative to:
Programmable notes with queries, Lua scripting, and wiki links
Stars
Stars growing over the last 30 days6,374Last commit
2 days agoLicense
MIT
A self-hosted, browser-based note-taking system that turns plain Markdown pages into a queryable, scriptable knowledge base you control.
Open Source Alternative to:
Lightweight distributed storage for self-hosting
Stars
Stars growing over the last 30 days4,756Last commit
13 hours agoLicense
AGPL-3.0
Self-contained distributed object storage with S3 API compatibility. Runs on minimal hardware, replicates data across 3 zones for maximum resilience.
Open Source Alternative to:
A spreadsheet engine you can embed, self-host, or run in the browser
Stars
4,225Last commit
9 hours agoLicense
Apache-2.0
IronCalc is an open-source, Rust-powered spreadsheet engine with .xlsx support, 300+ functions, and bindings for JavaScript and Python.
Open Source Alternative to:
Free office suite with Microsoft compatibility
Stars
Stars growing over the last 30 days4,552Last commit
8 hours agoLicense
GPL-3.0
Complete free office suite compatible with Microsoft formats (.doc, .docx, .xls, .xlsx, .ppt, .pptx). Open source alternative with regular updates.
Open Source Alternative to:
Embedded storage engine built on object storage
Stars
Stars growing over the last 30 days3,582Last commit
1 day agoLicense
Apache-2.0
SlateDB is an embedded storage engine that leverages object storage for durability, scalability, and simplified replication without the need for disk management.
Open Source Alternative to:
AI-powered platform for engineering LLM products
Stars
Stars growing over the last 30 days3,434Last commit
9 hours agoLicense
Apache-2.0
Laminar is an open-source platform that helps collect, understand, and utilize data for building high-quality LLM applications.
Open Source Alternative to:
Browser and notebook combined with local-first AI
Stars
3,610Last commit
2 months agoLicense
Apache-2.0
A browser that doubles as a personal notebook, letting you research, summarize, and take notes on web pages, PDFs, and videos without switching apps.
Open Source Alternative to:
Lightweight code editor with agents, Git, and terminal built in
Stars
3,122Last commit
4 days agoLicense
AGPL-3.0
Open-source code editor for macOS, Windows, and Linux that puts coding agents, terminal, Git, and GitHub in a single window.
Open Source Alternative to:
Track your life, your way
Stars
3,646Last commit
8 hours agoLicense
GPL-3.0
Ryot is a versatile platform for effortlessly tracking media, fitness, and more, replacing manual methods like spreadsheets.
Open Source Alternative to:
Webhook delivery platform with retries, security, and a portal
Stars
3,462Last commit
8 hours agoLicense
MIT
Add customer-facing webhooks to your product without building the infrastructure. Handles retries, signatures, multi-tenancy, filtering, and monitoring at scale.
Open Source Alternative to:
Group chat for friends and communities, without the baggage
Stars
3,423Last commit
13 hours agoLicense
Unknown
Self-hostable group chat with servers, channels, voice, and moderation tools. No ads, no data mining, built under EU privacy law.
Open Source Alternative to:
Zero-Trust VPN with built-in 2FA/MFA and SSO capabilities
Stars
2,882Last commit
14 hours agoLicense
Unknown
Enterprise-grade open source VPN solution combining WireGuard with mandatory 2FA/MFA and integrated OpenID Connect SSO for secure remote access
Open Source Alternative to:
Complete IT infrastructure monitoring made simple
Stars
Stars growing over the last 30 days2,609Last commit
8 hours agoLicense
GPL-2.0
Monitor your entire IT infrastructure with 2,000+ plugins, automated discovery, and scalable architecture. Open source and enterprise solutions available.
Open Source Alternative to:
Open canvas for designing and building web apps
Stars
2,688Last commit
5 days agoLicense
Apache-2.0
Design and build web applications on an open canvas with AI-powered tools, Figma integration, pixel drawing, and a modular SDK built for extensibility.
Open Source Alternative to:
AI agents that transform merchant risk decisions at scale
Stars
2,451Last commit
15 days agoLicense
Unknown
Reduce fraud, accelerate underwriting, and maintain compliance with AI-driven merchant risk intelligence for PSPs, banks, and fintechs.
Open Source Alternative to:
Secure password manager with end-to-end encryption
Stars
2,936Last commit
19 hours agoLicense
AGPL-3.0
Open-source password manager with end-to-end encryption for passwords, credit cards, notes, and documents. Cross-platform sync with secure sharing capabilities.
Open Source Alternative to:
OpenTelemetry observability with traces, logs, and metrics
Stars
Stars growing over the last 30 days1,856Last commit
8 hours agoLicense
Unknown
Observability platform built on OpenTelemetry and ClickHouse. Collect, visualize, and query distributed traces, logs, and metrics, with an MCP server for AI agent diagnostics.
Open Source Alternative to:
Business rules engine with AI, visual flows, and audit trails
Stars
Stars growing over the last 30 days2,087Last commit
3 days agoLicense
MIT
Model business logic in decision tables, visual flows, and natural-language rules. Change rules without deploys, test every path, and run the same engine anywhere.
Open Source Alternative to:
Unified API development ecosystem for modern teams
Stars
2,617Last commit
8 months agoLicense
AGPL-3.0
All-in-one platform for API testing, documentation, and collaboration, simplifying the entire API development lifecycle.
Open Source Alternative to:
Simplify your workflow with offline Kanban boards
Stars
2,068Last commit
11 hours agoLicense
GPL-3.0
Kanri is a free, open-source personal Kanban app that works offline, offering a modern and simple experience while respecting your privacy.
Open Source Alternative to:
Local meeting recorder that keeps your audio off the cloud
Stars
Stars growing over the last 30 days1,564Last commit
2 days agoLicense
MIT
Records meetings and voice memos locally using whisper.cpp, writes structured markdown to disk, and exposes 31 MCP tools so any AI agent can query your conversation history.
Open Source Alternative to:
Full-text search API with real-time indexing and crawling
Stars
1,920Last commit
16 hours agoLicense
Apache-2.0
Cloud search API and crawler service supporting billions of documents, real-time indexing, autocomplete, faceted filtering, and multi-language text across any application.
Open Source Alternative to:
Transform any song into karaoke with AI-powered vocals
Stars
1,510Last commit
4 days agoLicense
GPL-3.0
AI-powered karaoke software that separates vocals from any song, transcribes lyrics with word-level sync, scores your pitch in real-time, and includes dynamic backgrounds.
Open Source Alternative to:
Parallel AI agent workspaces with Git and project context
Stars
Stars growing over the last 30 days1,357Last commit
9 hours agoLicense
Apache-2.0
Run multiple AI coding agents in isolated Git worktrees, with cross-repo context, GitHub/Linear integrations, and support for Claude, Codex, Cursor, and more.
Open Source Alternative to:
Privacy-first proof-of-work CAPTCHA without user friction
Stars
2,496Last commit
1 year agoLicense
AGPL-3.0
Privacy-focused proof-of-work CAPTCHA system that silently protects websites without tracking users or requiring image solving. Drop-in replacement for reCAPTCHA.
Open Source Alternative to:
The modern GraphQL runtime
Stars
1,443Last commit
2 months agoLicense
Apache-2.0
Swiftly design and ship best-practice GraphQL backends atop existing data sources and APIs.
Open Source Alternative to:
Privacy-first analytics without cookies or tracking
Stars
Stars growing over the last 30 days1,214Last commit
1 day agoLicense
AGPL-3.0
Get powerful web analytics with zero cookies, 100% GDPR compliance, and full data ownership. Lightweight 3KB script delivers real-time insights without compromising user privacy.
Open Source Alternative to:
Local-first, offline-first no-code database platform
Stars
2,975Last commit
1 month agoLicense
AGPL-3.0
Build and manage custom databases with ease, create type-safe APIs, and develop applications quickly
Open Source Alternative to:
Postiz – The All-in-One agentic social media scheduling tool
Postiz
Capture
Stellar Hosted