As an AI language model, I do not have the ability to actively search for software development companies in a particular location. However, if you are looking for a software development company in Patna, you can use search engines or online directories to find companies that offer software development services in the area. Additionally, you can ask for referrals from friends, colleagues, or other businesses who have previously hired software development services in Patna. When you have a list of potential companies, you can evaluate them based on the criteria mentioned earlier to choose the best one for your needs.