Software Alternatives & Reviews

Cisco IOS

Cisco IOS is a family of software used on most Cisco Systems routers and current Cisco network... subtitle

Top 6 Open-Source Alternatives to Cisco IOS

FRRouting OpenWrt OPNsense pfSense FreeRouter OpenWISP

Summary

The top open-source alternatives to Cisco IOS are FRRouting, OpenWrt, and OPNsense. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.
  1. FRRouting (FRR) is an IP routing protocol suite for Linux and Unix platforms which
    Pricing:
    • Open Source

    #Operating Systems #Linux #Network & Admin 12 social mentions

  2. OpenWrt is an open-source firmware based on Linux for wireless routers
    Pricing:
    • Open Source

    #Operating Systems #Routers #Firmware 103 social mentions

  3. OPNsense® you next open source firewall. Free Download. High-end Security Made Easy™. Offers Intrusion Prevention, Captive Portal, Traffic Shaping and more.
    Pricing:
    • Open Source

    #Operating Systems #Linux #Perimeter Security And Firewalls 94 social mentions

  4. pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
    Pricing:
    • Open Source

    #Perimeter Security And Firewalls #Cyber Security #Network Security 10 social mentions

  5. freeRouter
    Pricing:
    • Open Source

    #Operating Systems #Linux #Transportation 2 social mentions

  6. A software platform to implement a complete public wifi service.
    Pricing:
    • Open Source

    #Operating Systems #Linux #Routers 11 social mentions

Suggest an alternative
If you think we've missed something, please suggest an alternative to Cisco IOS.
Please use the Feedback button if you think any of the listed products shouldn't be regarded as open-source.

Generic Cisco IOS discussion

Log in or Post with