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Handpicked Open Source Alternatives to Paid Softwares

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icon of Letta

Letta

AI & Machine LearningWeb & App DevelopmentData & Analytics

OS for AI agents. Build stateful agents with long-term memory, advanced reasoning, and custom tools using ADE or SDKs.

AI AgentDeveloper ToolsAPI Infrastructure+3
icon of Logto

Logto

Web & App DevelopmentSecurity & Monitoring

Logto is an open-source auth infrastructure designed for developers, offering features like multi-tenancy, enterprise SSO, and RBAC for SaaS and AI apps.

AuthenticationDeveloper ToolsAPI Infrastructure+5
icon of ZITADEL

ZITADEL

Security & MonitoringWeb & App DevelopmentSystem & IT

ZITADEL simplifies identity infrastructure for developers, offering secure authentication, authorization, and extensibility for modern applications.

AuthenticationSelf HostedAPI Infrastructure+3
icon of Convex

Convex

Web & App DevelopmentAI & Machine LearningData & Analytics

Convex is an open-source reactive database designed for app developers, providing a full-stack solution with real-time data synchronization and AI coding.

Developer ToolsBAASCloud Based+1
icon of Appwrite

Appwrite

Web & App Development

Appwrite is an open-source platform providing authentication, database, storage, functions, messaging, and realtime capabilities for developers.

Developer ToolsCodingSelf Hosted+3
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