Alternatives: SumizAI vs …

SumizAI next to every Obsidian and ChatGPT alternative

AlternativeTo lists 317 applications as alternatives to Obsidian and 589 as alternatives to ChatGPT. Merged on the application, that is 905 of them. There is a page here for each, comparing it with SumizAI on the things that can be checked — what it costs, whether the source is open, which platforms it ships on and what its own description says it does.

905applications
46index pages
2source lists

Facts about each application come from AlternativeTo — the Obsidian, ChatGPT lists — read on 2026-08-16. Where a description is silent about something, these pages say so rather than guess.

Obsidian — the app a list is built around

AlternativeTo names 317 applications as alternatives to Obsidian. It gets a comparison page of its own too.

SumizAI vs Obsidian →

ChatGPT — the app a list is built around

AlternativeTo names 589 applications as alternatives to ChatGPT. It gets a comparison page of its own too.

SumizAI vs ChatGPT →

Showing 1–20 of 905

  1. 001 Logseq Markdown, offline use, local files and encryption FreeOpen SourceNote-takingObsidian Compare →
  2. 002 Google Gemini Sync, voice, chat and large language models FreemiumAI ChatbotChatGPT Compare →
  3. 003 Zettlr Linked notes, LaTeX, code and web search FreeOpen SourceNote-takingObsidian Compare →
  4. 004 Claude Chat, large language models, code and search FreemiumAI ChatbotChatGPT Compare →
  5. 005 Joplin Markdown, offline use, encryption and sync FreemiumOpen SourceNote-takingObsidian Compare →
  6. 006 Mistral Vibe Privacy, collaboration, chat and large language models FreemiumAI ChatbotChatGPT Compare →
  7. 007 Anytype Markdown, offline use, encryption and sync FreemiumNote-takingObsidian Compare →
  8. 008 DeepSeek Tasks, chat and large language models FreemiumOpen SourceAI ChatbotChatGPT Compare →
  9. 009 Lumo by Proton Encryption, privacy, chat and large language models FreemiumOpen SourceAI ChatbotChatGPT Compare →
  10. 010 sNotes – Students Notes Online FreeNote-takingObsidian Compare →
  11. 011 Notesnook Markdown, offline use, encryption and privacy FreemiumOpen SourceNote-takingObsidian Compare →
  12. 012 Perplexity Chat, large language models and search FreemiumAI ChatbotChatGPT Compare →
  13. 013 Notion Collaboration and tasks FreemiumNote-takingObsidian Compare →
  14. 014 Duck.ai Privacy, chat and large language models FreemiumAI ChatbotChatGPT Compare →
  15. 015 Standard Notes Offline use, encryption, sync and self-hosting FreemiumOpen SourceNote-takingObsidian Compare →
  16. 016 Jan.ai Offline use, privacy, chat and large language models FreeOpen SourceAI ChatbotChatGPT Compare →
  17. 017 Microsoft OneNote Sync and collaboration FreemiumNote-takingObsidian Compare →
  18. 018 Qwen Collaboration, self-hosting, chat and large language models FreeOpen SourceAI ChatbotChatGPT Compare →
  19. 019 AppFlowy Offline use, privacy, collaboration and self-hosting FreemiumOpen SourceNote-takingObsidian Compare →
  20. 020 Poe Chat and large language models FreemiumAI ChatbotChatGPT Compare →

Trademarks, sources and corrections

Product names in this list belong to their owners and appear only to identify the products being compared. No affiliation, sponsorship or endorsement is claimed or implied, and no third-party logo or brand mark is reproduced anywhere in this section. The facts come from AlternativeTo, read on 2026-08-16, and may have changed since; each vendor's own site is the authority on its product. Corrections to contact@sumizai.com.