Below is a temporary backup of US Census-related files for use during the Federal Government shutdown. If you have some data to contribute, please contact irecensusreporter@gmail.com or @censusreporter.
Although we don't have the raw ACS data anymore, if you'd like to query data in a similar fashion to FactFinder, give our compare tool a try. You can download CSV and JSON for any arbitrary ACS table and geometry there.
Code for America also has some (different) TIGER 2013 data.