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OpenWrt

openwrt.org

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Spec score 8.6 #5 of 42 in Operating Systems

What it is

OpenWrt is a Linux operating system for embedded devices, commonly wireless routers. Its writable filesystem and optional package management let users customize devices by adding packages; the project lists more than 27,000 packages and services. Configuration is available through an SSH command-line interface or a web interface, and the Table of Hardware helps check device support before installation. Hardware capacity is a key consideration: OpenWrt identifies 8 MB flash and 64 MB RAM as bare minimums, while warning against devices at those limits for current, secure use. The downloads page lists OpenWrt 25.12.5 as the current stable release and describes development snapshots as generally untested. The older 24.10 release is slated to receive limited security and bug fixes for some time. OpenWrt is free software, with no subscription or licensing fees. The project says users should know GNU/Linux and basic networking concepts before installing it; voluntary support from developers and users is not guaranteed.

Spec sheet

What it does
OpenWrt is a Linux distribution and replacement firmware for embedded devices, especially wireless routers.Read 15 Oct 2026 · openwrt.org
Product
OpenWrt is a Linux operating system for embedded devices, typically wireless routers.Read 11 Oct 2026 · openwrt.org
Intended users
OpenWrt says users should know GNU/Linux and basic networking concepts before installing it.Read 11 Oct 2026 · openwrt.org
Support
The project says support may be provided voluntarily by developers and users, but is not guaranteed.Read 11 Oct 2026 · openwrt.org
License
The build environment is generally GPLv2, while bundled third-party components may use their own open-source or public-domain licenses.Read 15 Oct 2026 · openwrt.org
Founded
2004Read 28 Sep 2026 · openwrt.org
API and IPC
The uBus IPC/RPC system lets services publish callable methods for other services or clients.Read 15 Oct 2026 · openwrt.org
Build framework
Its build system cross-compiles the Linux kernel, root filesystem, toolchain and packages for a selected device target.Read 15 Oct 2026 · openwrt.org
Build requirements
The build system needs a case-sensitive GNU/Linux environment, roughly 10–15 GB free disk space and at least 2 GB RAM for typical compilation.Read 15 Oct 2026 · openwrt.org
Command line
Routers can also be administered through SSH and Linux command-line tools.Read 15 Oct 2026 · openwrt.org
Company database profile
Crunchbase lists OpenWrt as an active private organization with 11–50 employees and identifies OpenWrt and its build framework as products.Read 15 Oct 2026 · crunchbase.com
Company profile
LinkedIn classifies OpenWrt as a nonprofit software-development organization founded in 2003 with 11–50 employees.Read 15 Oct 2026 · linkedin.com
Configuration interfaces
Users can configure OpenWrt through a command-line interface over SSH or a web-based user interface.Read 11 Oct 2026 · openwrt.org
Current release
OpenWrt 25.12.5 is the latest stable release listed for the 25.12 series, released in July 2026.Read 15 Oct 2026 · openwrt.org
Customizable filesystem
It provides a fully writable filesystem with optional package management so users can customize devices with packages.Read 11 Oct 2026 · openwrt.org
Device support
OpenWrt provides a Table of Hardware to check whether a device is supported.Read 11 Oct 2026 · openwrt.org
Documentation
Official documentation is organized into quick-start, user and developer guides plus hardware and technical references.Read 15 Oct 2026 · openwrt.org
Extensibility
Developer feeds can load package recipes from Git, version-control repositories, local filesystems or other supported URLs.Read 15 Oct 2026 · openwrt.org
Firmware releases
The downloads page lists OpenWrt 25.12.5 as the current stable release and describes development snapshots as generally untested.Read 11 Oct 2026 · downloads.openwrt.org
Google Play availability
The Akasha Router listing showed 500+ downloads and was updated August 16, 2026; the page did not display a user-rating total.Read 15 Oct 2026 · play.google.com
Google Play companion
The third-party Akasha Router app supports OpenWrt through JSON-RPC over ubus and advertises telemetry, Wi-Fi control, parental schedules, ad blocking, WireGuard, SQM, port forwarding and Wake-on-LAN.Read 15 Oct 2026 · play.google.com
Hardware limits
The supported-devices page warns against 8 MB flash and 64 MB RAM devices for up-to-date, secure OpenWrt use, and lists 8 MB flash and 64 MB RAM as bare minimums.Read 11 Oct 2026 · openwrt.org
Image customization
The Image Generator can create device images with chosen packages and preset configuration.Read 15 Oct 2026 · openwrt.org
Installation requirement
Users must verify exact router model and hardware revision in the Table of Hardware before flashing firmware.Read 15 Oct 2026 · openwrt.org
Limit: administration burden
An independent 2026 review found custom-image testing does not prove firmware safety and recommends verifying the exact device revision before flashing.Read 15 Oct 2026 · mrkeyoor.com
Limit: hardware compatibility
ComputerBase warns that support can differ between hardware revisions sharing the same router model name.Read 15 Oct 2026 · computerbase.de
Limit: warranty
ComputerBase says installing OpenWrt generally voids the router manufacturer's warranty.Read 15 Oct 2026 · computerbase.de
LuCI web interface
LuCI provides browser-based administration for networking, wireless, DNS and services.Read 15 Oct 2026 · openwrt.org
Notable release news
The June 30, 2026 25.12.5 service release fixed remotely triggerable vulnerabilities in core services and added device support.Read 15 Oct 2026 · lists.openwrt.org
Package catalog
OpenWrt says it provides more than 27,000 packages and services.Read 11 Oct 2026 · openwrt.org
Package ecosystem
Many optional packages add capabilities such as VPNs, VLANs, monitoring and other network services.Read 15 Oct 2026 · openwrt.org
Package security
Official package indexes are digitally signed and include SHA-256 hashes for package-integrity verification.Read 15 Oct 2026 · openwrt.org
Package-manager change
OpenWrt 25.12 replaced opkg with Alpine's apk package manager.Read 15 Oct 2026 · openwrt.org
Praise: configurability
ComputerBase praises detailed configuration, browser-based LuCI administration, SSH access and add-on packages such as OpenVPN and Dynamic DNS.Read 15 Oct 2026 · computerbase.de
Praise: security longevity
ComputerBase highlights regular security updates and continued usefulness as an alternative to abandoned vendor firmware.Read 15 Oct 2026 · computerbase.de
Rating on ComputerBase
4.5 out of 5 from 35 reviewsRead 15 Oct 2026 · computerbase.de
SDK and custom builds
Developers can compile individual packages, apply patches and produce customized firmware images.Read 15 Oct 2026 · openwrt.org
Security default
The default firewall blocks unsolicited WAN traffic, while the project advises setting a root password and restricting administrative access.Read 15 Oct 2026 · openwrt.org
Security updates
The downloads page says the outdated 24.10 release will continue to receive limited security and bug fixes for some time.Read 11 Oct 2026 · downloads.openwrt.org
Self-hosting
Building OpenWrt on an OpenWrt device is possible but documented as experimental and requiring workarounds.Read 15 Oct 2026 · openwrt.org
Supported build hosts
The buildroot works on GNU/Linux, macOS and BSD, while Windows Cygwin is unsupported because its filesystem is not case-sensitive.Read 15 Oct 2026 · openwrt.org
Upgrade caution
Official documentation warns that blindly running apk upgrade can eventually brick a device and recommends firmware sysupgrade for coherent updates.Read 15 Oct 2026 · openwrt.org
VLAN support
VLAN tagging, bridging and trunking are built-in capabilities.Read 15 Oct 2026 · openwrt.org
Wireless controls
The system exposes detailed Wi-Fi and IP-management settings and supports configurable LEDs and buttons.Read 15 Oct 2026 · openwrt.org
Writable system
It supplies a fully writable filesystem and package management instead of a fixed vendor firmware image.Read 15 Oct 2026 · linkedin.com

Plans and prices

OpenWrt Free No subscription or licensing fees Read 11 Oct 2026 · openwrt.org
OpenWrt free software Free GPL-licensed · supported hardware required · voluntary community support Read 15 Oct 2026 · openwrt.org

Every OpenWrt plan and price →

Strong points and limits

Strong points

  • Writable filesystem supports package customization
  • Lists more than 27,000 packages and services
  • Offers SSH and web configuration interfaces
  • No subscription or licensing fees

Limits

  • Devices at the hardware minimum are discouraged
  • Development snapshots are generally untested
  • Voluntary support is not guaranteed

Who it suits

OpenWrt suits users who want to customize embedded devices such as wireless routers and are familiar with GNU/Linux and basic networking concepts.

Verdict

OpenWrt offers extensive customization and both command-line and web configuration. Check device support and hardware capacity first, and expect to bring Linux and networking knowledge.

Where Specifiction places it

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