Showing 24 of 243 results
Salesforce
Salesforce is the dominant proprietary CRM platform for sales, service, and marketing teams.
Slack
Slack is a proprietary team messaging platform with per-seat pricing that scales expensive as teams grow, and message history that lives on Slack's servers.
Rocket.Chat
Rocket.Chat is itself open source (MIT licensed) — a self-hosted, all-in-one communication platform with messaging, voice, video, and AI.
Shopify
Shopify is a proprietary, hosted ecommerce platform used by millions of stores.
BigCommerce
BigCommerce is a proprietary, hosted ecommerce platform aimed at mid-market and enterprise stores.
HubSpot
HubSpot is a proprietary CRM and marketing platform popular with small and mid-sized teams.
Discord
Discord is a proprietary chat platform popular with gaming and online communities.
Cursor
Cursor is a proprietary AI-powered code editor built as a VS Code fork.
ChatGPT
ChatGPT is OpenAI's proprietary, cloud-hosted AI chat assistant.
Pinecone
Pinecone is a proprietary, fully managed vector database used for semantic search, RAG, and AI agent memory.
GitHub Copilot
GitHub Copilot is GitHub's (a Microsoft company) proprietary AI pair-programming assistant, built into VS Code, JetBrains, and other editors via a paid subscription.
LM Studio
LM Studio is a free but closed-source desktop app for downloading and running LLMs locally.
n8n
n8n is a fair-code workflow automation platform — its source is visible and it's free to self-host under the Sustainable Use License, but that license restricts commercial redistribution and offering n8n as a competing hosted service, which is different from a permissive open-source license like MIT or Apache 2.0.
Microsoft Teams
Microsoft Teams is Microsoft's proprietary team chat and video platform, bundled into Microsoft 365 subscriptions.
commercetools
commercetools is an enterprise headless commerce platform built on MACH architecture (microservices, API-first, cloud-native, headless).
LangSmith
LangSmith is LangChain's proprietary platform for tracing, evaluating, and monitoring LLM applications.
Claude
Claude is Anthropic's proprietary AI assistant, accessed through Anthropic's own apps and API.
Jan
Jan is a proprietary-adjacent but already free desktop app for running AI models locally — it's actually open source itself (Apache-2.0).
LobeChat
LobeChat is already a free, open-source (Apache-2.0) AI chat interface.
Open WebUI
Open WebUI is already a free, self-hosted, open-source (BSD-3-Clause) interface for local AI models.
Datadog
Datadog is a proprietary, cloud-hosted observability platform for metrics, logs, and traces.
Zoho CRM
Zoho CRM is a cloud-based CRM aimed at small and mid-sized businesses, priced well below enterprise competitors like Salesforce.
Zilliz
Zilliz Cloud is the managed, hosted version of Milvus, offered by the company that created Milvus.
MongoDB Atlas Vector Search
MongoDB Atlas Vector Search adds vector similarity search on top of MongoDB's managed Atlas database, letting you combine embeddings with your existing operational data for RAG and semantic search.
How to choose an open-source alternative
The count on each card is a starting point, not a ranking. Ten matches usually means a crowded category rather than ten equivalent products — a tool listed against Salesforce may replace one workflow you use and none of the others. These are the four things worth checking before you commit to a switch.
The licence, precisely
“Open source” covers a wide range. Permissive licences (MIT, Apache-2.0) let you modify and deploy with no obligation. Copyleft ones (AGPL) require you to publish your changes once you expose the software over a network, which matters if you intend to build a product on top of it. A growing number of projects ship under source-available or fair-code terms (BSL, SSPL, Sustainable Use): readable and self-hostable, but with commercial use restricted. Every tool page states the licence it actually ships under.
What self-hosting really costs
Trading a subscription for a server does not remove the cost, it moves it — to backups, upgrades, monitoring, and whoever gets paged when it breaks. Most projects listed here also sell a managed plan, and that is usually the honest comparison against the proprietary incumbent, not the self-hosted figure.
Project health
Stars measure attention, not maintenance. A project with 40k stars and no commit in eight months is a worse bet than a quieter one released every month. Look at commit frequency, how quickly issues get triaged, and whether the work rests on a single maintainer or on a company with revenue behind it.
The migration path
Most switches are decided by one question: can you get your data out of the incumbent and into the replacement? Check for an importer aimed at the specific tool you are leaving, and test it on a copy of your real data before you plan anything. Export formats that look standard often are not.