
Notion
Logseq
Joplin
Evernote
Roam Research
Bear
Typora
A second brain, for you, forever. Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files.
Langfuse
LangSmith
Helicone AI
Galileo AI
Promptfoo
Arize
PromptLayer
Rapidly ship AI without guesswork

Which is more popular?
Based on our record, Obsidian seems to be a lot more popular than Braintrust.dev. While we know about 1532 links to Obsidian, we've tracked only 3 mentions of Braintrust.dev.
Website, pricing, platforms and company facts side by side.
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| Website | obsidian.md | braintrust.dev |
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| Company | Startup from the United States | — |
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What each product offers, as listed by its team.

Possible disadvantages
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An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
No analysis of Braintrust.dev yet.
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OBSIDIAN: Getting Started, Facts & Pricing
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Share your experience with using Obsidian and Braintrust.dev. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

One thing to note: Notion bills itself as an Evernote competitor for personal users. It can be—but it's too much for most people, and its offline functionality isn't the best. If you love the idea of Notion, go right...
This app is the kind of thing that, if you’re into it, will have you exploring its various ins, outs, and add-ons for days and weeks on end. Obsidian uses the Markdown format for its notes (which means they can be...
However, it's important to note that Obsidian's whiteboard functionality is not as robust as dedicated collaboration tools. While it lacks real-time basic collaboration features, Obsidian compensates with its vibrant...
We have no reviews of Braintrust.dev yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.

The reasons live somewhere else: in practice notes in an Obsidian vault, one note per convention, with the repos it has held in. A note starts as an idea, moves to trialing, and only becomes enforced once I've applied it again in a few... - Source: dev.to / about 7 hours ago
It's the team version of the second brain you build with Obsidian and Claude. - Source: dev.to / 5 days ago
The first time I downloaded Obsidian was about two years ago and I really liked the concept of storing everything locally in simple markdown files without unnecessary clutter. - Source: dev.to / 3 days ago
Braintrust focuses on evaluation-driven development: the idea that monitoring LLM applications means continuously scoring outputs against quality criteria, not just tracking latency and error rates. It's an eval platform first, with... - Source: dev.to / 5 months ago
You're monitoring production traffic. You need Langfuse / Phoenix / Helicone / Braintrust for that. Online eval is a different problem class: implicit feedback, drift detection, hallucination rates on your data, not on HellaSwag. - Source: dev.to / 5 months ago
Same approach works with Langfuse, Phoenix, Braintrust, or your existing OTel pipeline — the metadata.userId pattern is the universal part. - Source: dev.to / 6 months ago
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Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
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