(was — a new, faster crate index website

I'm happy to announce:, an alternative opinionated front-end to

  • It's fast. Very fast.

  • All readmes are displayed whenever possible, and if there's no or poor readme, doc comments are shown too (example).

  • It combines information from multiple sources, e.g. byline is a compact amalgamation of Cargo.toml, accounts, and GitHub contributors, so you get an idea who wrote the code even if authors forgot to keep Cargo.toml up to date (example).

  • Crate popularity is displayed as top-N position in its most relevant category, e.g. "#5 in Cryptography", which is more meaningful than absolute download numbers.

  • Optional dependencies display which feature or platform they're for (example/example).

  • Version history is summarized to help see at a glance whether a crate gets regular updates and how often it has breaking changes.

  • Recognizes sys crates even if they're not called -sys and shows when is used (example). Shows how much non-Rust code there is in a crate.

  • Category pages fit more crates on screen despite looking less cluttered and having easier to read descriptions (example).

  • All categories and their representative crates are right there on the homepage.

  • Syntax highlighting everywhere, including inline `code` blocks (example).

  • Everything works without JS and gets indexed by search engines, so I'm hoping the site will help find crates. Give it some link juice, please :slight_smile:

  • Search with pretty good ranking

  • Dark theme (automatic in Firefox and Safari)

To do:


Is there a way to search? I can’t see a search box anywhere.

1 Like

Is there any way to search? vs.

So, yes, just a bit.


That’s amazing, definitely can see myself using this (although I third the calls for some form of search box, even if it’s just an embedded Google one :P)

Is it possible for any of this to be integrated into Or is the approach too different?

Is there a reason this isn’t merged with :stuck_out_tongue:

Cool stuff!

I clicked around a bit, and was impressed with how fast the delightfully bare-bones pages load on my midling mobile phone. is a lot more sluggish.

I really like your idea of relative ranking inside categories (the “#5 in cryptography”). This nicely normalises across categories. e.g. clippy Vs bitflags, even though they’re both #1 in their category, the download numbers are wildly different (35.935 downloads per month Vs 1.102.614, man bitflags is popular!)

How do you see this in relation to Are you angling of being a replacement? Or more like a playground for ideas to be “upstreamed”?

2 Likes is also a registry, primary database of crate metadata and an API, and it’s doing well in these roles. front-end is heavy JS. It was easier for me to rewrite it in Rust than to get Ember working :wink: So these can’t be merged, but can adopt some ideas.


Oh nooo! Can we get the Rust Evangelism Strike Force in here :stuck_out_tongue_closed_eyes:

Cool that you’re experimenting like this, and I’d LOVE to read an in-depth piece on this! :heart:


If you decide to roll your own search, I’d be happy to brainstorm with you. The single most important piece of advice I can give is to design search alongside an evaluation framework for it.


I also see as accurate/objective representation of crate data. For example I search for any readme.* file in associated git repository, and shows readme only if author published it in the crate. I display github users as crate authors if they wrote arbitrarily significant amount of code, and displays exact metadata, etc.


This could also serve as a platform for experimentation. For example, one idea I’ve had for improving discoverability is for us to analyze dependencies to see what crates tended to be used together, so we can recommend related crates. Some of us are manually doing that today, like in assert_cli we have a “related crates” section.


Yes, crate suggestions would be great. It doesn’t work well with simple co-occurence though, since it wouldn’t be able to know failure is an alternative for error-chain.

This is really cool! I do like the categorization, tagging, crate landing pages, and speed.

I found that Tantivy was rather easy to use for search indexing, and I’d recommend it to any Rust project with relatively simple needs.


How come slog-async is higher than slog itself? slog has more downloads per month etc. Something seems off there.

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Yup, I needed to reindex download counts. Some download numbers will be out of date, as I’m waiting for official crates-io data dumps.

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very cool! +1 on a search box

Quite neat! Is it safe to assume the site’s code will be open-sourced?

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Yes, of course! edit: It’s fully open sourced now:

  • I’m going to pitercss_conf this week, so I don’t have time to fix the above issue.

FIY, we have a pretty active Rust community here in St. Petersburg :slight_smile: cc @ozkriff


FIY, we have a pretty active Rust community here in St. Petersburg :slight_smile:

Yep, we’re trying to meet up every two weeks in JetBrains’ office.
The next meetup is 2018.06.12 12:00 - @kornel come along if you have time :slight_smile: