40 Open-Source Gems to Ditch Your SaaS Subscriptions

Erik ChenErik Chen
11 min read

40 open-source gems to supplant your usual SaaS subscriptions — a compendium of remarkable resources to elevate any developer’s repertoire. You can integrate or deploy these solutions into your workflows. Let’s commence:


1. Postiz

Postiz stands as an open-source scheduler that refines social media management across various outlets.

  • AI-Powered Timing: Employs artificial intelligence to pinpoint optimal posting windows for heightened interaction.

  • Omnichannel Management: Oversee and line up updates on multiple platforms from one unified hub.

  • Insights and Analytics: Presents data-driven performance metrics to sharpen content tactics.

  • Collaborative Workflow: Enables teams to coordinate, comment, and schedule collectively.

Postiz


2. Tolgee

Tolgee is an open-source localization solution that simplifies translation for software ecosystems.

  • In-Context Language Adaptation: Edit translations directly within your app’s live interface.

  • Developer-Centric SDKs: Integrates neatly with diverse programming frameworks.

  • Team Collaboration: Fosters streamlined cooperation among translators and dev teams.

  • Automated Screenshots: Supplies context-specific visuals for linguists.

Tolgee


3. MedusaJS

MedusaJS is a Node.js-based headless commerce engine, offering tailor-made scalability for e-commerce projects.

  • Modular Core: Personalize or expand any module to fit specialized requirements.

  • Decoupled Architecture: Craft individualized storefronts with complete flexibility.

  • Abundant Plugins: Integrate payment processors, content systems, and more with ease.

  • Sturdy Performance: Designed to handle expanding user populations efficiently.

MedusaJS


4. Formbricks

Formbricks offers a developer-oriented backend for forms, simplifying data capture and manipulation.

  • Seamless Connection: Integrate various forms sans extensive backend coding.

  • Instantaneous Data Retrieval: Access submissions in real time.

  • Adaptable Pipelines: Customize how data is processed and utilized.

  • Security-Centric Storage: Protect sensitive form input from unauthorized eyes.

Formbricks


5. Hanko

Hanko furnishes a passwordless authentication paradigm, boosting both protection and ease for end users.

  • WebAuthn Integration: Embraces modern authentication protocols for next-level security.

  • Biometric Verification: Supports fingerprint and facial-recognition sign-ins.

  • Straightforward Setup: Includes SDKs and APIs for effortless implementation.

  • Reinforced Safeguards: Mitigates password-related vulnerabilities.

Hanko


6. ToolJet

ToolJet is an open-source, low-code framework that expedites the building of internal dashboards and tools.

  • Intuitive Drag-and-Drop: Construct features without heavy coding burdens.

  • Multitude of Integrations: Tie into PostgreSQL, MySQL, MongoDB, and additional databases.

  • Custom Scripting: Augment applications with embedded JavaScript.

  • Vast Plugin Library: Tap into preconfigured modules from the community.

ToolJet


7. Novu

Novu delivers an open-source notification framework for harmonizing all communication channels.

  • Consolidated API: Dispatch messages through email, SMS, push alerts, or chat from one system.

  • Template Oversight: Craft, revise, and handle notification layouts.

  • Metric Tracking: Observe open rates and interaction levels.

  • Event-Driven Triggers: Automate notifications in response to specific user behaviors.

Novu


8. Flipt

Flipt is an open-source feature-flag platform aiding teams in safe code deployments.

  • Flexible Feature Toggles: Activate or deactivate functionalities swiftly.

  • Granular Targeting: Roll out features to precise subsets of users.

  • A/B Experimentation: Evaluate variations and their influence on user feedback.

  • Tracking and Auditing: Maintain a robust log of modifications.

Flipt


9. PostHog

PostHog is an open-source product analytics suite to unearth user engagement patterns.

  • Event Profiling: Capture granular user movements within your application.

  • Session Playback: Visualize user sessions to diagnose hiccups.

  • Feature Flags: Incrementally launch novel functionalities.

  • Self-Hosted Freedom: Own every fragment of data on your infrastructure.

PostHog


10. Dub

Dub is an open-source link shortener enabling users to conjure concise, trackable URLs.

  • Custom Branded Links: Strengthen brand image with succinct domain names.

  • Analytics Dashboard: Examine click-throughs and user interest.

  • Programmatic Access: Integrate link generation with external apps via an API.

  • On-Premise Hosting: Maintain unabridged control by deploying on private servers.

Dub


11. AppFlowy

AppFlowy offers an open-source rival to Notion, emphasizing privacy and extensibility.

  • Versatile Text Blocks: Compose and arrange content blocks seamlessly.

  • Local or Self-Hosted Data: Safeguard information under your direct supervision.

  • UI Customizability: Adapt layouts to align with distinct workflows.

  • Multi-Platform Reach: Accessible across major operating systems.

AppFlowy


12. Jitsi

Jitsi comprises open-source components for secure and streamlined video conferences.

  • No Registration Needed: Initiate meetings spontaneously, no signup required.

  • Robust Encryption: End-to-end protocols keep calls confidential.

  • High-Fidelity Audio/Video: Delivers clear, high-definition conferencing.

  • Extensive Scalability: Ideal for both intimate gatherings and sizable webinars.

Jitsi


13. Plane

Plane is an open-source tracker for issues and project orchestration, optimizing software development progress.

  • Kanban Visualization: Employ boards for a bird’s-eye overview of tasks.

  • Issue Indexing: Log and categorize bugs, features, and tasks proficiently.

  • Team Synergy: Real-time updates and in-app dialogues.

  • External Integrations: Effortless linkage with GitHub, GitLab, and other platforms.

Plane


14. NocoDB

NocoDB transforms SQL databases into intuitive spreadsheet-style interfaces.

  • Spreadsheet-Like Environment: Familiar interface for data management.

  • Auto-Generated APIs: Expose your tables as REST endpoints seamlessly.

  • Shared Collaboration: Allow team members to co-edit records.

  • Workflow Automation: Sync with tools like Zapier or Integromat.

NocoDB


15. Coolify

Coolify is an open-source equivalent to Heroku and Netlify, hosted on your own terms.

  • Single-Click Deploy: Drastically reduces deployment overhead.

  • Multi-Tech Support: Compatible with Node.js, Python, static sites, and more.

  • Seamless SSL Management: Maintain certificate provisioning effortlessly.

  • Real-Time Resource Monitoring: Observe performance metrics at a glance.

Coolify


16. Taubyte

Taubyte delivers serverless computation solutions that simplify backend intricacies.

  • Edge Hosting: Operate services closer to users for minimal latency.

  • Adaptive Scalability: Accommodates demand surges without fuss.

  • Fortified Platform: Includes security features for reliable applications.

  • Developer Tooling: Extensive resources to ease coding and deployment steps.

Taubyte


17. Dokku

Dokku is a lightweight PaaS, leveraging Docker to host applications efficiently.

  • Git Deployment: Push updates via Git for near-instant deployments.

  • Plugin Ecosystem: Access a spectrum of add-ons contributed by the community.

  • Database Readiness: Rapid provisioning of PostgreSQL, Redis, and more.

  • Domain + SSL Administration: Map custom domains and secure them effortlessly.

Dokku


18. PocketBase

PocketBase is a turnkey open-source backend offering storage, user auth, and a database.

  • Embedded SQLite: Keeps infrastructure requirements minimal.

  • Live Subscriptions: Streams updates as they occur.

  • Authentication Features: Supports email-based login or OAuth flows.

  • REST Endpoints: Manipulate data with everyday HTTP calls.

PocketBase


19. Appwrite

Appwrite is a comprehensive backend server for web and mobile developers.

  • Versatile Authentication: Email/password, OAuth, and more.

  • Structured Database: Manage relational data tables effortlessly.

  • File Management: Securely store and administer user-uploaded files.

  • Functions as a Service: Integrate custom server logic with ease.

Appwrite


20. Supabase

Supabase functions as an open-source alternative to Firebase, underpinned by PostgreSQL.

  • Automatic APIs: Generate endpoints from your existing table schemas.

  • Auth and Permissions: Centralized user and access controls.

  • Live Data Updates: Retrieve real-time changes without manual refreshes.

  • Built-In File Storage: Consolidate file handling neatly.

Supabase


21. PrestaShop

PrestaShop is a free, open-source e-commerce framework fueling global online outlets.

  • Storefront Customizations: Pick from abundant themes and adjust at will.

  • Advanced Catalog Administration: Organize inventories with precision.

  • Multilingual Facilitation: Sell across borders in multiple languages.

  • Comprehensive Analytics: Dissect sales trends and user movements.

PrestaShop


22. Mattermost

Mattermost is an open-source collaboration suite that prioritizes secure team communication.

  • Channel-Based Chat: Keep discussions organized within dedicated streams.

  • Confidential File Sharing: Ensure encrypted transfer of documents.

  • Audio and Video Capabilities: Conduct calls directly within the platform.

  • Enterprise Connectivity: Integrate with corporate workflows and software.

Mattermost


23. ERPNext

ERPNext is an expansive, open-source ERP catering to organizations of any magnitude.

  • Modular Suite: Incorporates CRM, inventory oversight, accounting, and more.

  • Workflow Tailoring: Adapt processes for distinct business needs.

  • International Readiness: Multi-currency, multi-lingual support out of the box.

  • User-Friendliness: No steep learning curve for non-technical personnel.

ERPNext


24. Nextcloud

Nextcloud offers client-server software for constructing and operating file-sharing infrastructures.

  • File Syncing & Sharing: Effortlessly access your documents from multiple devices.

  • Collaboration Extensions: Co-edit files or chat in real time.

  • Absolute Data Control: Manage storage physically or on self-managed servers.

  • App Ecosystem: Expand Nextcloud’s capabilities with numerous community add-ons.

Nextcloud


25. Mautic

Mautic is an open-source marketing automation system to enhance customer outreach.

  • Campaign Orchestration: Construct multi-channel outreach campaigns.

  • Email Personalization: Craft relevant email experiences.

  • Lead Oversight: Track prospective clients and nurture them systematically.

  • Data Analysis: Acquire insights to refine marketing strategies.

Mautic


26. Wekan

Wekan is an open-source kanban solution for planning projects and tasks.

  • User-Friendly Layout: Drag, drop, and reorder tasks with simplicity.

  • Collaborative Atmosphere: Invite colleagues and assign duties quickly.

  • Tailored Boards: Mold boards to reflect distinct workflows or categories.

  • Activity Logs: Stay updated on every transition or revision.

Wekan


27. Documenso

Documenso serves as an open-source alternative for electronic signatures and document handling.

  • Legally Compliant E-Signatures: Obtain valid sign-offs on digital forms.

  • Document Administration: Upload, store, and share essential contracts securely.

  • Tracking and Logs: Maintain thorough records of signature events.

  • Interoperability: Integrate with your established workflows.

Documenso


28. Cal

Cal.com is an open-source scheduling system that streamlines booking appointments.

  • Customized Booking Pages: Curate the look and feel of your meeting links.

  • Calendar Synchronizations: Connect seamlessly with Google, Outlook, and more.

  • Global Time Zone Adaptation: Automatically detects user time zones.

  • Group Sessions: Coordinate calls with multiple invitees effortlessly.

Cal.com


29. Prometheus

Prometheus is an open-source platform for metric gathering and alert dispatch.

  • Dimensional Model: Categorize metrics with precise labels.

  • Robust Querying: Use PromQL to sift through and interpret performance data.

  • Alert Mechanisms: Fire alerts when conditions meet predetermined thresholds.

  • Data Visualization: Often integrated with Grafana for dynamic dashboards.

Prometheus


30. Plausible

Plausible is a lean, open-source analytics application.

  • Privacy Emphasis: Collects no cookies or personal identifiers.

  • Straightforward Metrics: Zeroes in on essential webpage statistics.

  • Swift Setup: Insert a concise script to begin tracking.

  • Fully Open Source: Inspect, modify, or enhance as you see fit.

Plausible


31. Fathom

Fathom provides uncomplicated, privacy-centric site analytics.

  • Compliant with GDPR: Eliminates personal data tracking.

  • Lightweight Footprint: Minimal overhead on load times.

  • Simple Dashboard: Clear, digestible traffic information.

  • Custom Script Hosting: Serve analytics scripts from your own domain.

Fathom


32. n8n

n8n is an extensible workflow automation system bridging numerous services.

  • Visual Designer: Assemble automated flows by dragging nodes on a canvas.

  • Broad Integration: Interact with over 200 applications natively.

  • Conditional Branching: Implement complex logic and multiple paths.

  • Self-Hosting Capable: Secure and store your data on your servers.

n8n


33. Trieve

Trieve is an AI-driven infrastructure platform specializing in retrieval and ranking scenarios.

  • Semantic Querying: Leverages advanced search language models for precise relevance.

  • Human Alignment Tools: Provides methods for fine-tuning search outcomes.

  • Cross-Encoder Re-Rankers: Improves the ordering of search results.

  • Weighted Relevance: Enhances user satisfaction by surfacing the most pertinent matches.

Trieve


34. Chatwoot

Chatwoot is an open-source customer interaction suite, offering robust live chat functionality.

  • Unified Inbox: Handle incoming messages from website chat, email, or social media in one interface.

  • Instant Communication: Converse with clients in real-time.

  • Customization Options: Adjust chat widgets to align with brand identity.

  • Insightful Metrics: Monitor agent performance and customer sentiment.

Chatwoot


35. Composio

Composio is an open-source content system focusing on streamlined editing and teamwork.

  • Intuitive Editor: Edit content with a simple yet powerful interface.

  • Collaborative Functionality: Work with your team on simultaneous tasks.

  • Adaptable Templates: Launch websites quickly with easily alterable templates.

  • Plugin Ecosystem: Extend the system with additional features as needed.

Composio


36. LLMWare

LLMWare harnesses Large Language Models (LLMs) to present AI-driven business solutions.

  • Conversational Agents: Deploy chatbot-style interfaces for user support.

  • Document Mining: Automate extraction and analysis of hefty text volumes.

  • Tailored Model Training: Align AI with specialized sector requirements.

  • Integration API: Infuse LLM prowess into pre-existing applications.

LLMWare


37. Airbyte

Airbyte is an open-source data unification engine, centralizing information from disparate origins.

  • Extensive Connectors: Access more than 120 pre-made connectors for APIs and databases.

  • Easy Connector Creation: Develop and publish your own connectors effortlessly.

  • Scheduling & Oversight: Automate data pipelines and track performance issues.

  • Compositional Architecture: Scale horizontally as requirements escalate.

Airbyte


38. Phoenix

Phoenix is an Elixir-based web framework renowned for its high throughput and real-time features.

  • Built-in Real-Time: Integrated WebSockets for instantaneous updates.

  • Functional Paradigm: Harnesses Elixir’s robust concurrency model.

  • Massive Scalability: Manage countless simultaneous connections.

  • Developer Efficiency: Offers code generators and scaffolding for rapid prototyping.

Phoenix


39. Papermark

Papermark is a shared documentation environment merging note creation with project supervision.

  • Markdown Syntax: Write and style text intuitively using Markdown.

  • Simultaneous Editing: Multiple contributors can modify documents at once.

  • Version Snapshots: Revisit older iterations and restore them if needed.

  • Organizational Tools: Employ tags and folders for straightforward retrieval.

Papermark


40. Affine

Affine is a collaborative knowledge hub merging structured and unstructured work processes.

  • Fluid Hierarchies: Merge notes, tasks, and data in versatile ways.

  • Concurrent Collaboration: Watch team members revise content in real time.

  • Multi-Platform Reach: Available across web, desktop, and mobile setups.

  • Open-Source Framework: Powered by community-driven initiatives.

Affine

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Written by

Erik Chen
Erik Chen