Sites and apps similar to VoiceSifter include Twilio. It's paid, but Tellephant and D7SMS are free. Other options are iP.1 RESTful API, SendSMSGate, Bandwidth and CheapGlobalSMS. You can choose from more than 10 Video Calling Apps like VoiceSifter for self-hosting.
Twilio is a web-service API that lets you use your existing web languages and skills to build voice and SMS applications. We focus on building a simple, powerful, pay-as-you-go communications platform so that you can focus on what you do best.
United States
This RESTful API is a modern API that lets you use the message services provided by iP.1 Networks AB via your own applications. Do everything from just sending SMS messages to managing contacts and sending surveys.
Tellephant is a one stop shop for everything you need to grow your business. Make your business more accessible with WhatsApp!
Cheap SMS Gateway with simple API and 24/7 Support. Pricing cheaper than Twilio in 2-3 times. Good choice for startups.
Communications API Platform - Easily add texting or calling to any app through http API. Send/Receive text messages, picture messages, phone calls in one line of code.
United States
Send cheap sms worldwide with instant delivery and reports in real-time. The best Bulk SMS service provider for SMPP, SMS API, Receiving 2-way SMS, Resellers
International Communication Platform as a Service (CPaaS) provider with zero-hop connectivity to telecoms globally. It supports all major mobile communication channels, like SMS, email, WhatsApp, Viber, voice, video and more, over API and web UI.
D7 SMS allows reaching the customers via SMS over D7's own connectivity to global mobile networks. D7 provides reliable and cost-effective SMS services to businesses across all industries and aims to connect all countries and territories.
SMS Marketing and Marketing Automation software for Mass SMS, internal communications & emergency alerts. #1 Text Messaging Service used by Fortune 500s.
United States
WhatsApp is a popular messaging platform around the globe. With Maytapi you can send and receive messages from WhatsApp using simple HTTP requests. Integrate your marketing or business platform (Shopify, Woocommerce, CRM ets.) to WhatsApp easily.
Eagle Messaging offers voice messaging, text SMS service, Voicemail, IVR, chat, and more. Users can send 60 minutes of a recorded voice message. Cost-Effective, unlimited SMS service & all-inclusive price (Only $10) on a per-month subscription basis.
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