vxref provides integration of the xref tool into vim. The xref tool is a cross referencing and refactoring tool with a free version available that parses C and Java code, and a paid version that parses C++. vxref brings solid auto-completion (as opposed to all sorts of flakey varieties such as omni-complete) and accurate code browsing with scope information to vim.
Gitbrowser is a plugin for the Geany IDE for browsing Git repositories. It creates a tree view of an existing Git repository that you have on your local disk. It allows you to see all the files collected in a tree, and to quickly open any file using a special, optimized, "Quick Open" dialog with type-to-filter.
Griffon IDE is an IDE for HTML, Bash, Perl, PHP, C, etc. It allows the generation of source code in a few clicks, avoiding traps. It features auto completion, an integrated terminal, project management for C, SFTP mounting (mounting a directory via an ssh key), automatic replacement of text, and a session management tab.