Depends on what you mean with comprehensive, but Wikipedia's List of Solar System probes seems fairly up to date (date for InSight is still 2016 and it has recently been announced that the launch date slipped to no earlier than May 2018) and also includes confirmed future probes (subject to interpretation) and cancelled missions.
You should be able to also find infographics showing our Solar system exploration endeavors, but while visually appealing, unless they present past missions only and you pay attention to when they were created, those obviously won't age so gracefully as some community edited list. You could find some at JPL Infographics, Space.com Infographics, or in our Collection of space exploration related infographics on Space Exploration Meta (contributions welcome). For example, here's JPL Mission Paths:
I realize that infographics aren't really what you asked for, but since you mention that you're working on a project, perhaps some such visualizations wouldn't go amiss towards building awareness on the topic. Maybe for some poster session. ;)