Nom	Off the shelf software	Custom software
1	Off the shelf software has very low upfront costs.	Upfront costs for custom software are high.
2	Off the shelf software offers you its free trials and versions.	Custom software, on the other hand, has no free trials.
3	Change or feature requests in off the shelf software may get ignored.	It additionally costs you for doing any change in the feature requests.
4	Support Included	Tailored to your exact business needs.