Yes, both Okta and Dialpad Talk offer a Free Trial.
Okta is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Dialpad Talk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Okta Starts at $2/User/Month whereas for Dialpad Talk Starts at $15/User/Month.
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 Dialpad Talk includes CloudTalk, VoIPstudio, Vonage Business, Vodia PBX, 4PSA VoipNow, MightyCall, Ringover, Continent Telecom IP PBX, GoTo Connect, Comcast Business VoiceEdge and CloudPhone.