Quantum
Yes, both Lockr and Doppler offer a Free Trial.
Lockr is designed for Large Enterprises, Medium Business and Small Business.
Doppler is designed for Individuals, Freelancers and Small Business.
Pricing for Lockr Starts at $8.25/Month when Billed Yearly whereas for Doppler Starts at $7/User/Month.
Some top alternatives to Lockr includes ManageEngine Key Manager Plus, AWS Key Management Service, Azure Key Vault, Box KeySafe, Equinix SmartKey, Alibaba Key Management Service, NetLib Security Encryptonizer Key Manager, EnvKey, Alliance Key Manager and Universal SSH Key Manager.
Some top alternatives to Doppler includes AWS Key Management Service, Azure Key Vault, Box KeySafe, Akeyless Vault, Equinix SmartKey, EnvKey, Alliance Key Manager, Universal SSH Key Manager, Seekrit and SmartEncrypt.
