Austin-based Convio, which develops software-as-a-service for managing nonprofits, has added a Virginia solutions provider to its list of partners. According to Mysamaris, it has become an authorized partner in Convio's Solution Provider program. The program provides a number of support services for companies that consult and implement services around Convio's products. Mysamaris manages the online fundraising program fro the American Red Cross National Headquarters.