Yes, both Okta and Bitwarden offer a Free Trial.
Okta is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Bitwarden is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Okta Starts at $2/User/Month whereas for Bitwarden Starts at $1/month when yearly.
Some top alternatives to Okta includes Oracle Identity Management, SailPoint IdentityIQ, WSO2 Identity Server, Keycloak, Azure AD, Ping Intelligent Identity, Ping Identity, Teamstack, Auth0, Frontegg and Login-Master.
Some top alternatives to Bitwarden includes LastPass, 1Password, Dashlane, Keeper, PassCamp, TeamPassword, Drive Password, NordPass, Passwarden and Passky.