rConfig is described as 'free open source network device configuration management utility for network engineers to take frequent configuration snapshots of their network devices'. There are nine alternatives to rConfig for Linux, Windows, Mac, Self-Hosted solutions and Online / Web-based. The best alternative is RANCID, which is both free and Open Source. Other great apps like rConfig are GenieACS (Free, Open Source), Oxidized (Free, Open Source), Unimus (Paid) and NeDI (Free, Open Source).
RANCID - Really Awesome New Cisco confIg Differ. A web-based tool for automatically downloading Cisco configurations into a CVS version-control system which can be searched, displayed and "diffed" to compare versions of the configuration files.
A fast and lightweight TR-069 Auto Configuration Server (ACS). GenieACS can work with any device that supports the TR-069 protocol. It auto-discovers the device’s parameter tree (including vendor-specific parameters) making no assumptions about the device’s data model.
Kiwi CatTools saves you time by automating common network configuration tasks. It supports over 60 different device-types from the leading network device manufacturers. Mainly Backup device configurations, rollback, perform bulk changes.
EasyCwmp is a GPLv2 open source implementation of the TR069 cwmp standard. EasyCwmp is developed by PIVA Software and it is derived from the project freecwmp.The aim of this project is to be fully conform with the TR069 CWMP standard.