Open Source Projects using SvelteKit
A curated collection of the 34 best open source software using SvelteKit. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.
Multi-channel notification infrastructure for apps
Stars
40,279Last commit
15 hours agoLicense
Unknown
Open-source platform for building in-app, email, push, SMS, and chat notifications with a unified API, workflow engine, and embeddable inbox component.
Open Source Alternative to:
One interface for every AI model you run or connect
Stars
157,822Last commit
5 hours agoLicense
BSD-3-Clause
Self-hosted AI platform that connects local and cloud models, extends with Python, and keeps your data under your control.
Open Source Alternative to:
Run LLMs locally with minimal setup, maximum hardware support
Stars
133,414Last commit
6 hours agoLicense
MIT
C/C++ inference engine for large language models, supporting quantization, multi-GPU, Apple Silicon, and an OpenAI-compatible server across a wide range of hardware.
Open Source Alternative to:
Self-hosted photo and video backup for your own server
Stars
118,281Last commit
5 hours agoLicense
AGPL-3.0
Back up, organize, search, and browse your personal photo and video library on your own server, with no third-party cloud access.
Open Source Alternative to:
Postgres-powered backend platform for production apps
Stars
Stars growing over the last 30 days114,547Last commit
5 hours agoLicense
Apache-2.0
Provides a full backend stack built on Postgres: authentication, auto-generated APIs, edge functions, realtime subscriptions, file storage, and vector search.
Open Source Alternative to:
Framework-agnostic authentication for TypeScript applications
Stars
30,598Last commit
7 hours agoLicense
MIT
A comprehensive authentication framework offering email/password, social sign-on, two-factor auth, and multi-tenant support with full TypeScript integration.
Open Source Alternative to:
Build data-rich React apps with ease and flexibility
Stars
35,997Last commit
2 months agoLicense
MIT
A React-based framework for rapid development of internal tools, admin panels, and dashboards with powerful data handling capabilities.
Open Source Alternative to:
Spaced repetition flashcards that remember for you
Stars
32,572Last commit
18 hours agoLicense
Unknown
Flashcard app using spaced repetition to schedule reviews at the exact moment you're likely to forget, so you retain more with less study time.
Open Source Alternative to:
Revolutionize your Git workflow with simultaneous branches
Stars
21,925Last commit
6 hours agoLicense
FSL-1.1-MIT
GitButler is a powerful Git client that enables seamless work on multiple branches concurrently, enhancing your existing workflow.
Open Source Alternative to:
Open-source workflow automation for developers
Stars
18,391Last commit
5 hours agoLicense
Unknown
Powerful, self-hosted platform for building and running workflows, scripts, and apps with code-first approach and collaborative features.
Open Source Alternative to:
Fast grammar checking that respects your privacy
Stars
Stars growing over the last 30 days17,415Last commit
12 hours agoLicense
Apache-2.0
Open source grammar checker that analyzes your writing quickly while keeping your data completely private and secure on your device.
Open Source Alternative to:
Open-source API documentation and testing platform
Stars
16,376Last commit
10 hours agoLicense
MIT
Scalar is an open-source tool for building, customizing, and hosting interactive API documentation with OpenAPI support.
Open Source Alternative to:
Build full-stack apps with TypeScript and real-time sync
Stars
12,778Last commit
7 hours agoLicense
Unknown
Open-source reactive database that keeps your web and mobile apps in sync. Write everything in TypeScript with built-in auth, cron jobs, and AI integration.
Open Source Alternative to:
Passwordless OIDC provider built for self-hosters
Stars
Stars growing over the last 30 days10,011Last commit
15 hours agoLicense
BSD-2-Clause
Self-hostable OpenID Connect and OAuth 2.0 provider that lets users sign in to any OIDC-compatible app using passkeys instead of passwords.
Open Source Alternative to:
Serverless backend platform for modern app development
Stars
9,376Last commit
9 hours agoLicense
MIT
Fully managed backend infrastructure with built-in authentication, database, storage, and serverless functions for rapid application development.
Open Source Alternative to:
Visual development platform for modern web experiences
Stars
8,884Last commit
24 hours agoLicense
MIT
Drag-and-drop interface for creating and optimizing digital experiences, with headless CMS and powerful integrations.
Open Source Alternative to:
Auto-generated network diagrams that stay current
Stars
5,935Last commit
20 hours 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:
Transform SQL into beautiful data stories
Stars
7,087Last commit
9 hours agoLicense
MIT
Create data-driven websites and reports using SQL and Markdown, with automatic visualizations and interactive elements.
Open Source Alternative to:
Deploy a professional status page in minutes, no coding required
Stars
5,236Last commit
22 hours agoLicense
MIT
Free, open-source status page and uptime monitor with Docker deployment. Track 11 service types, manage incidents, schedule maintenance, and notify subscribers instantly.
Open Source Alternative to:
Full observability for AI agents in production
Stars
4,744Last commit
1 day agoLicense
MIT
Open-source platform for monitoring AI agents: captures traces, surfaces failure patterns, alerts on issues, and helps you verify fixes with automated evals.
Open Source Alternative to:
Feature-rich backend that runs anywhere you need it
Stars
3,780Last commit
5 days agoLicense
Apache-2.0
Lightweight Firebase alternative with database, auth, storage, and workflows. Framework-agnostic backend that integrates with NextJS, Remix, Hono and more.
Open Source Alternative to:
Browser and notebook combined with local-first AI
Stars
3,619Last 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:
Secure, decentralized cloud storage for your data
Stars
3,284Last commit
2 days agoLicense
AGPL-3.0
Storj offers a distributed cloud storage platform with enhanced security, global performance, and significant cost savings compared to traditional providers.
Open Source Alternative to:
Build privacy-compliant cookie banners with full control
Stars
Stars growing over the last 30 days2,019Last commit
1 day agoLicense
Apache-2.0
Open source consent management framework for modern web apps. Framework-agnostic, fully customizable, and performance-first with no vendor lock-in.
Open Source Alternative to:
Build your custom learning academy in minutes
Stars
1,737Last commit
14 hours agoLicense
AGPL-3.0
Open source LMS designed for companies and training organizations. Create, manage, and deliver courses with AI support, customizable dashboards, and collaborative features.
Open Source Alternative to:
Local-first, offline-first no-code database platform
Stars
2,976Last 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:
Open-source email API with enterprise deliverability
Stars
920Last commit
2 days agoLicense
AGPL-3.0
Self-hosted email API alternative to AWS SES & Mailgun. Open-source AGPL-3.0 with enterprise features, automated deliverability, and cloud version coming 2026.
Open Source Alternative to:
Visual regression testing made effortless
Stars
1,676Last commit
7 months agoLicense
MIT
Automated visual testing tool that detects UI changes, ensures consistency, and accelerates development workflows.
Open Source Alternative to:
Low-code and no-code platform for business apps
Stars
387Last commit
14 hours agoLicense
AGPL-3.0
Full-stack open source platform combining no-code and low-code studios to build, deploy, and integrate web, mobile, and desktop business applications.
Open Source Alternative to:
Open-source changelog & roadmap platform for teams
Stars
301Last commit
9 months agoLicense
Apache-2.0
Self-hostable changelog and roadmap platform with community voting, automated newsletters, and kanban boards. Deploy with Docker in minutes.
Open Source Alternative to:
Generate legal policies directly from TypeScript code
Stars
165Last commit
22 hours agoLicense
Apache-2.0
Open-source policy-as-code framework that lets developers create privacy policies, terms of service, and legal agreements using TypeScript with built-in GDPR/CCPA compliance.
Open Source Alternative to:
Type-safe feature flags and remote config for developers
Stars
167Last commit
1 year agoLicense
AGPL-3.0
Abby offers open-source, fully typed feature flagging and remote configuration for React and Next.js, with multi-environment testing and debugging tools.
Open Source Alternative to:
Privacy-first newsletter platform without tracking
Stars
34Last commit
10 days agoLicense
AGPL-3.0
Create and send newsletters with complete privacy protection. No tracking, no data collection - just simple, clean email delivery with customizable templates and archive sites.
Open Source Alternative to:
Blogging platform with built-in SEO, themes, and APIs
Stars
25Last commit
2 days agoLicense
AGPL-3.0
Self-hostable blogging platform with a clean editor, zero-config SEO, custom themes, real-time collaboration, and built-in comments and newsletters.
Open Source Alternative to:
c15t – Open-source cookie banner, built for control and lightening fast modern web apps.
Capture
Bright Data
CodeRabbit