Google Voice offers free U.S. phone numbers, voicemail, and call forwarding. Below are 20 free (or freemium) VoIP services that provide U.S. numbers or similar calling/SMS capabilities as alternatives to Google Voice.
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Free U.S. phone number with unlimited texting and calling over Wi‑Fi or data; ad‑supported with optional paid upgrades.
Provides a free U.S. phone number for texting and limited voice calls; ad‑supported with premium features available.
Offers a free U.S. phone number with 500 minutes, 500 texts, and 500 MB of data per month; upgrade options for more usage.
Free U.S. (and Canadian) numbers for voice calls and SMS; earn credits by watching ads or purchase credits for unlimited use.
Free U.S. phone number for unlimited calls and texts over Wi‑Fi; ad‑supported with optional premium plans.
Free U.S. and Canadian numbers for business or personal use; unlimited texting and calling over data/Wi‑Fi (ad‑supported).
Free inbound U.S. DID (Direct Inward Dialing) number; outbound calls are pay‑as‑you‑go. Ideal for SIP‑based softphones.
Provides a free German number, but offers a free trial U.S. number for testing; SIP‑based calling with web and mobile apps.
Open‑source SIP softphone that works with any free SIP provider (e.g., Callcentric) to place/receive calls using a U.S. number.
Free SIP/VoIP softphone compatible with many free SIP accounts; can register a free U.S. DID from providers like Callcentric.
Free inbound U.S. DID for SIP‑based phones; outbound calls are billed per‑minute. Good for low‑volume personal use.
Provides a free U.S. virtual number for inbound calls and SMS via web or mobile app; limited minutes for outbound calls.
Free 30‑day trial with a U.S. number and 100 minutes of outbound calling; robust SIP platform for advanced users.
30‑day free trial that includes a U.S. virtual number, unlimited calling, and SMS within the U.S.; full business‑grade features.
Free 15‑day trial with a U.S. number, unlimited domestic calls, SMS, and video meetings; cloud‑based PBX features.
30‑day trial that provides a U.S. virtual number, call forwarding, and voicemail; aimed at small businesses.
Free 30‑day trial with a U.S. number, 500 minutes of outbound calls, and unlimited inbound calls.
14‑day free trial offering a U.S. virtual number, unlimited domestic calling, and integrated CRM tools.
Provides free U.S. toll‑free and local numbers for inbound calls; primarily for conference calling but can be used as a personal line.
30‑day trial with a U.S. toll‑free number that forwards to any device; includes call recording and SMS (limited).