What are the best PartKeepr alternatives?

PartsBox is an online app for keeping track of electronic parts and projects. It helps in managing parts inventory, supports designers by keeping documents (datasheets, PDFs, 3D models) together with part data, and provides BOM pricing with supplier selection.

PartBolt makes it easy for you to track and organize electronic components. You’ll know exactly what you have and where it is. In addition, you can track projects that you create with your parts, meaning that you'll know what parts are being used where.

AXT Parts is an engineering parts management system developed to keep track of parts and components in an engineering development environment, and allow design documentation to be produced (BOM) utilising the parts.

Parts Inventory and BOM Management for Electronics.

Aligni is cloud-based software for product lifecycle and manufacturing management. Unified PLM and MRP for engineers, product designers, and manufacturers.

Parts&Vendors makes it easy to document your new product design as the work progresses. It keeps item specs, parts lists, notes, links to drawing files, links to web sites and vendor contact information all in one place and accessible.