Top 4 C++ Userspace Projects

skift

9 2,185 9.7 C++

🥑 The delightful operating system.
bpftime

6 618 9.2 C++

Userspace eBPF runtime for fast Uprobe & Syscall hook & Extensions with LLVM JIT

Project mention: eBPF Tutorial by Example 16: Monitoring Memory Leaks | dev.to | 2024-01-20

Uprobe in kernel mode eBPF runtime may also cause relatively large performance overhead. In this case, you can also consider using user mode eBPF runtime, such as bpftime. bpftime is a user mode eBPF runtime based on LLVM JIT/AOT. It can run eBPF programs in user mode and is compatible with kernel mode eBPF, avoiding context switching between kernel mode and user mode, thereby improving the execution efficiency of eBPF programs by 10 times.

WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
libriscv

16 409 9.6 C++

C++20 RISC-V RV32/64/128 userspace emulator library

Project mention: Ask HN: Looking for a project to volunteer on? (November 2023) | news.ycombinator.com | 2023-11-02

Seeking: https://github.com/fwsGonzo/libriscv
This is a C++ RISC-V emulator that focuses on isolating a single process, aka userspace emulation. I am currently working mostly on binary translation, and recently I have made a push to move it from experimental state to fully supported. Another experimental feature is embedding libtcc and using that for binary translation. It is fairly fast to compile, and gives decent speedups. The challenge is what to do now that (perhaps) some low hanging fruits have been picked.

ublksrv

2 128 6.9 C++

ublk: userspace block device driver

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).