2020-02-24
Some notes about the question "who is actually using Rust?".
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Firefox
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Dropbox's storage backend is in Rust, probably other components as well
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Reddit uses Rust on every request for markdown parsing
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Amazon in AWS Fargate container orchestration
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Microsoft's IoT Edge has a Rust component.
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Facebook uses Rust for source management and other things
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Cloudflare uses Rust for multiple purposes
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Rust makes up increasingly large parts of Google's Fuchsia operating system
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The popular Sentry metrics monitor has components written in Rust
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Discord uses rust
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Rust is used by at least 33 blockchain companies
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There are multiple companies building Rust-in-secure-enclaves products, including Baidu. Not huge yet, but if enclaves catch on, Rust will be in a lot of them.
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Part of Figma's (popular design tool) backend is in Rust
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Parts of the Linkerd service mesh (which I believe is relatively popular) are written in Rust
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Rust command-line programs are increasingly popular, and Debian stable already ships with a number of them. ripgrep is particularly notable, but people outside of the Rust community are also using fd-find, exa, and hexyl. 4% of Debian packages are written in Rust. (https://bioreports.net/debian-riscv64-port-status/, https://www.reddit.com/r/rust/comments/cap9ul/debian_10_released_contains_ripgrep_fdfind_exa/).
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Visual Studio Code ships with ripgrep
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System76
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Ticketmaster uses Rust in their rewrite (what's the status?)
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Links about Rust support in Debian