Open source tools that you can host yourself (requires some developer background):
- Contact Congress (Open Source) - Send emails to members of the US Congress. This was developed by EFF as an open source project. They use it for their own campaigns internally. There is also a hosted version run by Fight for the Future (see below).
- Call Congress - Coordinate call-in days to US Congress, the President, or local or corporate targets. Original project from Fight for the Future and Taskforce.is, but with lots of development from Mozilla and the EFF. Frontend looks like this, https://call.mozilla.org and the backend looks like http://callpower.org. A hosted version is available, and the code is AGPL.