Software and Tools for SaaS & Tech Startups

LI

Liveblocks

4.5/5.01 verified review

Freemium

Realtime infrastructure and synchronization for collaborative apps and AI agents.

• Ready-to-use APIs and hooks that simplify real-time sync implementation.
• Built-in automatic conflict resolution for simultaneous collaborative editing.
• Native support for AI workflows and concurrent agents.

4.8kstars on GitHub

FL

Flagsmith

4.5/5.01 verified review

Freemium·Open Source·BSD-3-Clause

Open source feature flag and remote configuration platform.

• Open source core enabling complete self-hosting on proprietary infrastructure.
• SDKs available for multiple backend and frontend platforms and environments.
• Remote configuration and granular user segmentation capabilities.

6.6kstars on GitHub

EX

Expo

4.5/5.01 verified review

Freemium·Open Source·MIT

Development and deployment platform for building native apps with React and React Native.

• Unified ecosystem for building and deploying iOS and Android apps.
• Built-in Over-The-Air (OTA) updates for rapid bug fixes.
• Advanced CLI and simulation tooling optimized for modern developer workflows.

53.2kstars on GitHub

PO

Polar

4.5/5.01 verified review

Freemium

Billing and Merchant of Record platform built for AI-driven software businesses.

• Specialized architecture for AI usage metrics like tokens and GPU time.
• Merchant of Record status handles complex global tax compliance.
• Simplified migration workflows from existing Stripe setups.

KI

Kinde

4.5/5.01 verified review

Freemium·Open Source·MIT

Integrated authentication, user management, and billing platform for SaaS.

• Native integration between authentication and billing.
• Extensive ecosystem of SDKs for common frameworks.
• Built-in customer portal and user management dashboard.

19stars on GitHub

KE

KeystoneJS

4.5/5.01 verified review

Free·Open Source·MIT

Programmable headless content management system based on Node.js and GraphQL.

• Automatically generated GraphQL API from data schemas.
• Highly flexible headless architecture fully customizable via code.
• Intuitive admin interface generated without manual setup.

10.0kstars on GitHub

IN

Instatus

4.5/5.01 verified review

Free

Modern status page and uptime monitoring platform for engineering teams.

• Fast creation of customizable status pages with custom domains.
• Native integration with collaboration and chat tools like Slack and Teams.
• Functional permanent free tier for early projects.

GI

GitBook

4.5/5.01 verified review

Freemium

Technical documentation and knowledge platform featuring docs-as-code support and AI assistance.

• Native support for docs-as-code workflows with GitHub synchronization
• Integrated AI assistant for search and contextual responses
• Clean, modern interface optimized for technical reading

DE

Descope

4.5/5.01 verified review

Freemium·Open Source·MIT

Visual CIAM platform for users, B2B business customers, and AI agents.

• Visual workflow orchestration via drag-and-drop builders and extensible SDKs.
• Native support for complex identities including users, B2B tenants, and AI agents.
• Rapid implementation of passwordless authentication and SAML/OIDC connectors.

72stars on GitHub

DA

DatoCMS

4.5/5.01 verified review

Free

Headless CMS built around GraphQL, REST APIs and flexible content modeling.

• High-performance GraphQL API optimized for fast content delivery
• Intuitive interface designed for non-technical content editors
• Native support for localization and multilingual workflows

UP

Uploadcare

4.5/5.01 verified review

Freemium

Complete infrastructure platform for file uploading, processing, and media delivery.

• Drop-in upload components supporting multiple storage sources.
• On-the-fly image and video processing via dynamic CDN URLs.
• Global high-performance CDN for fast asset delivery.

TE

Terraform

4.5/5.01 verified review

Freemium

Infrastructure as code tool to provision and version resources across any cloud provider.

• Cloud-agnostic declarative configuration model.
• Vast ecosystem of official and community providers and modules.
• Precise versioning and auditing of infrastructure changes.

50.1kstars on GitHub