Methods and systems for facilitating incremental software development are disclosed. For example, a method can include receiving a plurality of binary software libraries sufficient for building a software project. A request from a user to modify source code for at least one of the plurality of binary libraries is received. In response to receiving the request, the source code for the at least one of the plurality of binary libraries is retrieved. The source code for the at least one of the plurality of binary libraries is presented to the user. Modified source code for the at least one of the plurality of binary libraries is received. The modified source code is compiled to produce compiled modified code. A revised version of the software project is built using the compiled modified code and the plurality of binary libraries.