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Handpicked Open Source Alternatives to Paid Softwares

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icon of 21st.dev

21st.dev

Web & App DevelopmentAI & Machine LearningDesign & Creative+1

A platform to discover, share, and remix UI components, offering ready-to-use React Tailwind components inspired by shadcn/ui.

UI/UX DesignDeveloper ToolsCoding Assistant+3
icon of Chaos Genius

Chaos Genius

Data & AnalyticsAI & Machine LearningBusiness & Productivity+1

An autonomous agent platform for data and AI cost optimization on Snowflake, Databricks, EMR & Redshift.

AI AgentCloud ManagementData Visualization+6
icon of Qwen

Qwen

AI & Machine LearningWeb & App Development

An open-source family of large language models developed by Alibaba Cloud, featuring scalable model sizes and versions released under permissive licenses like Apache 2.0 .

AI AgentLLMOpsSelf Hosted+2
icon of OpenLLaMA

OpenLLaMA

AI & Machine LearningWeb & App Development

An open-source reproduction of Meta AI’s LLaMA models, offering permissively licensed weights in 3B, 7B, and 13B parameter sizes compatible with both PyTorch and JAX.

AI AgentLLMOpsDeveloper Tools+2
icon of OLMo

OLMo

AI & Machine LearningWeb & App Development

A fully open-source LLM framework from the Allen Institute for AI, providing model weights, training code, data, and evaluation tools in a transparent package.

AI AgentLLMOpsDeveloper Tools+4
icon of Appsmith

Appsmith

Web & App DevelopmentAI & Machine LearningBusiness & Productivity+1

An open-source low-code platform to build custom AI-powered apps and internal tools 10X faster with full code-level control.

Open CoreDeveloper ToolsAPI Development Tools+10
icon of Zilliz Cloud

Zilliz Cloud

AI & Machine LearningData & AnalyticsWeb & App Development+1

A fully-managed vector database service powered by Milvus, designed for enterprise-grade AI applications at any scale.

LLMRAGAI Search Tools+6
icon of VoceChat

VoceChat

Communication & CollaborationWeb & App DevelopmentSystem & IT

It is a lightweight, self-hostable chat application and framework built with Rust, offering private in-app messaging and AI bot integration.

ChatSelf HostedChatbots+7
icon of Encore

Encore

Web & App DevelopmentAI & Machine Learning

An open-source TypeScript backend framework for building robust, type-safe distributed systems with declarative infrastructure-as-code.

Developer FrameworkDeveloper ToolsAPI Development Tools+12
icon of Steel‑LLM

Steel‑LLM

AI & Machine LearningWeb & App Development

A fully open-source, 1B-parameter Chinese-centric language model trained from scratch, with complete access to code, data, checkpoints, and logs under the Apache 2.0 license.

AI AgentLLMOpsDeveloper Tools+1
icon of TinyLLaMA

TinyLLaMA

AI & Machine LearningWeb & App Development

A compact, open-source LLaMA-based language model (~1.1 B parameters) pretrained on trillions of tokens under the Apache 2.0 license.

AI AgentLLMOpsDeveloper Tools+2
icon of Moxin-LLM

Moxin-LLM

AI & Machine LearningWeb & App Development

A fully open-source large language model suite offering reproducible training, open weights, and instruction-tuned variants under the Apache 2.0 license.

AI AgentLLMOpsDeveloper Tools+2
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