chrono VS mozsearch

Compare chrono vs mozsearch and see what are their differences.

chrono

Date and time library for Rust (by chronotope)

mozsearch

Mozilla code search website. (Please file bugs in bugzilla at https://mzl.la/2YtXmoN) (by mozsearch)
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chrono mozsearch
23 17
3,126 234
2.3% 2.6%
9.7 9.0
10 days ago 16 days ago
Rust Rust
GNU General Public License v3.0 or later Mozilla Public License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

chrono

Posts with mentions or reviews of chrono. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-10-16.
  • The Unix leap second mess
    1 project | news.ycombinator.com | 27 Mar 2024
  • Getaddrinfo() on glibc calls getenv(), oh boy
    10 projects | news.ycombinator.com | 16 Oct 2023
    The problem is that this effects higher languages too, because they often build on libc. And on some OSes, they don't have a choice, because the system call interface is unstable and/or undocumented).

    For example in rust, multiple time libraries were found to be unsound if `std::env::set_env` was ever called from a multi-threaded program. See:

    https://github.com/time-rs/time/issues/293 and https://github.com/chronotope/chrono/issues/499

    https://github.com/rust-lang/rust/issues/27970

    https://github.com/rust-lang/rust/issues/90308

  • Choosing the Right Rust Web Framework: An Overview
    4 projects | news.ycombinator.com | 23 Aug 2023
  • ZeroVer: 0-Based Versioning
    3 projects | news.ycombinator.com | 7 Jul 2023
    > I think library authors should be more relentless and break compatibility every few years. We just need some conventions to not do so very often.

    I indeed did this years ago---I'm the original author of Chrono [1]---and it wasn't well received [2] [3] [4]. To be fair, I knew it was a clear violation of semantic versioning but I didn't see any point of obeying that until we've reached 1.0 so I went ahead. People complained a lot and I had to yank the problematic release. By then I realized many enough people religiously expect semantic versioning (for good reasons though) and it's wiser to avoid useless conflict.

    [1] https://github.com/chronotope/chrono

    [2] https://github.com/chronotope/chrono/issues/146#issuecomment...

    [3] https://github.com/chronotope/chrono/issues/156

    [4] https://github.com/chronotope/chrono/blob/main/CHANGELOG.md#...

  • Simple, fast and safety alternative for unzip
    7 projects | /r/rust | 11 Mar 2023
    On that note, it would also be good to configure cargo-deny so that a CI pipeline and any maintainer can easily audit the current dependency versions. Sometimes CVEs require a new major semver (looking at you, time 0.1.x and thus chrono 0.4.x), so it's not enough to rely on people installing the tool with semver-compatible updates. Automatically auditing dependencies is really important, and given how easy cargo-deny makes it, I don't think many projects have any excuse not to configure it.
  • Is it unidiomatic/anti-pattern to use the return keyword ?
    1 project | /r/rust | 10 Feb 2023
    The example has been randomly taken from the [Chrono][https://github.com/chronotope/chrono/blob/main/src/offset/utc.rs] crate.
  • Will Rust drop dependency on libc and make direct system calls? when ? (Please don't mention no_std case)
    6 projects | /r/rust | 16 Oct 2022
    libc isn't "just a wrapper". Is a massive legacy codebase filled with hacks, UBs and bugs: https://github.com/chronotope/chrono/issues/499
  • chrono 0.4.20 has been released, fixing the RUSTSEC-2020-0159 issue
    1 project | /r/rust | 4 Aug 2022
  • chrono 0.4.20-rc.1 has just been released!!
    2 projects | /r/rust | 26 Jul 2022
    Would love to have people test this, you can leave feedback here: https://github.com/chronotope/chrono/issues/674.
  • Trying to learn about chrono, Duration, etc...
    1 project | /r/rust | 12 Jul 2022
    Security issues? I'm looking at the open issues, but haven't noticed any that seem to be security related (no security related labels either). What am I missing here?

mozsearch

Posts with mentions or reviews of mozsearch. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-10-10.
  • Firefox tooltip bug fixed after 22 years
    4 projects | news.ycombinator.com | 10 Oct 2023
    - code browsing is primitive compared to https://searchfox.org/ (but most code browsing tool are, in comparison)

    - my notifications are completely flooded by lots of useless information on GitHub, but that might be fixable

    - our CI system (treeherder/taskcluster) scales, works on Linux/Mac/windows/Android and a bunch of version and arch, integrated with all of the other tools mentioned. Things such as auto-running tests based on the content of the patch, automatic categorization and prioritization of intermittent test failures, or auto-recording test failures and offering a pernosco recording showing the issue are just some of the features that we use daily without even thinking

  • Why SQLite Does Not Use Git
    13 projects | news.ycombinator.com | 22 Jul 2023
    All the time. I would say at least 50% of my code browsing is done from my phone. I make heavily use of the mobile GitHub web interface for this (find-references support has been a godsend, search is still meh, I hate how they keep breaking basic find-in-page with SPA jank). Also Searchfox [0] when I need to comb through Firefox code (fast, excellent, no complaints).

    Context: grad student, programming languages and systems research plus a bunch of IoT hacking on my own time. Either elder Gen Z or youngest possible Millennial, depending where you put the cutoff.

    [0] https://searchfox.org

  • Sourcegraph is no longer Open Source
    26 projects | news.ycombinator.com | 4 Jul 2023
    [4] is not really a usable 'product'. Livegrep (https://github.com/livegrep/livegrep) was inspired by it and is very usable.

    [3] used to be a Google open source project as well, but it fell out of maintenance, and Sourcegraph took it over. It powers most of the basic regex/literal search in Sourcegraph.

    Mozilla's code is searchable in Searchfox (https://searchfox.org/) which uses the indexer from Livegrep, combined with their own Git indexer and language-specific cross reference databases.

    OpenGrok (https://github.com/oracle/opengrok) is also rather well known, but I have found it to have a slightly worse UI than alternatives.

  • Firefox 113.x quietly adds new Linux system requirements
    1 project | /r/firefox | 4 Jun 2023
    Try using Searchfox to find references to those libraries. When you open a result, hover your mouse over the left column to see what commit added each line.
  • Fetch API Implementation source
    1 project | /r/firefox | 24 May 2023
  • How to find the name of elements for firefox css
    1 project | /r/FirefoxCSS | 8 Apr 2023
    You might want to lokk at this, and this, and this .
  • What environment variables does Firefox need on Linux?
    1 project | /r/firefox | 18 Mar 2023
  • Does this CSS rule crash anyone else's firefox?
    1 project | /r/FirefoxCSS | 22 Nov 2022
    Layout is hella broken, obviously, but it doesn't crash. You can do a search for progresschunck at https://searchfox.org to find what it means.
  • Swipe to navigate arrow indicator
    1 project | /r/FirefoxCSS | 6 Oct 2022
    https://searchfox.org/ should be you go-to tool to search Firefox code-base.
  • How to apply some css changes only to one (firefox's dark) theme?
    1 project | /r/FirefoxCSS | 24 Jul 2022
    Also, you can use browser toolbox to inspect Firefox UI and see what styles are being applied to it and to figure out what selectors to use. Of course, there is also https://searchfox.org/ for when you need to figure out exactly how Firefox is doing some feature x.

What are some alternatives?

When comparing chrono and mozsearch you can also consider the following projects:

time - The most used Rust library for date and time handling.

opengrok - OpenGrok is a fast and usable source code search and cross reference engine, written in Java

advisory-db - Security advisory database for Rust crates published through crates.io

hoogle - Haskell API search engine

jelly-actix-web-starter - A starter template for actix-web projects that feels very Django-esque. Avoid the boring stuff and move faster.

sourcegraph - Code AI platform with Code Search & Cody

chat - A telnet chat server

codesearch - Fast, indexed regexp search over large file trees

rusqlite - Ergonomic bindings to SQLite for Rust

git-peek - git repo to local editor instantly

polystrip - A 2D accelerated graphics library for Rust

roaring-rs - A better compressed bitset in Rust