CallMultiplier vs. String Comparison


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		Related Products CallHub CallHub is a digital organizing platform empowering political campaigns, nonprofits, advocacy groups, unions, and businesses with scalable outreach via calling, texting, email, and automation. The platform offers Predictive Dialer for high-volume campaigns, Power Dialer for personalized calls, and Auto Dialer. AI-powered Smart Insights categorize call sentiments. Dynamic Caller ID, Spam Shield, and SHAKEN/STIR compliance maximize answer rates. Text capabilities include Peer-to-Peer Texting, Text Broadcasts, and Text-to-Join with SMS/MMS support, URL tracking, and automated responses. Workflows automation enables multi-channel campaigns. The mobile app allows volunteers join campaigns from smartphones. CRM integrations with NationBuilder, NGP VAN, Salesforce, and Blackbaud ensure seamless sync. CallHub is SOC 2, ISO 27001, GDPR, and TCPA compliant. Trusted by 200,000+ campaigns, it has facilitated 1 billion calls and 750 million texts. 428 Ratings Visit Website DialerAI Our autodialer software are used for automating sales calls, payment collections, appointment reminders, phone polling and market research. It can also be used for mass emergency voice broadcasting. The system is ideal for Telcos and companies selling callcenter services as it is multi-tenant with billing and white-labeled while being economical to run as you choose your own Voice Provider. Our autodialer software can massively increase productivity by dropping busy, unanswered and disconnected line, passing calls answered by real people back to your agents, and leaving messages on answering machines. 5 Ratings Visit Website Air Air gives your team's work a memory. Every asset, version, and approval is tracked in one place, and that context powers everything that happens next: finding what's approved in seconds, adapting it for any channel, and scaling it everywhere without breaking brand. Air connects the creative team that makes the work to the marketing team that multiplies it, with a shared system of record keeping everyone aligned. 849 Ratings Visit Website Notifyre Notifyre is a secure online fax and text messaging service for businesses, rated 4.7/5 from 1,187 customer reviews. Pay as you go from 3 cents per fax page and 2 cents per SMS, with no contracts, no hidden fees, and wallet funds that never expire. Why businesses choose Notifyre: - Live chat, phone, and email support from a local U.S. team - A dedicated account manager who guides you through 10DLC registration (the approval US carriers require for business texting) - Free BAA for medical and health organizations, with HIPAA compliance standard on every plan - ISO 27001 certified with AES 256-bit encryption, user access controls, audit trails, and 99.99% uptime Fax features: online fax platform, email to fax and fax to email, fax API, online fax numbers, free fax number porting, and fax broadcast to 20,000+ recipients. Text messaging features: SMS and MMS online, email to SMS, SMS and MMS API, mass texting and SMS marketing, subscriber and opt-out management, bulk contact upload, SMS templates, and personalization fields. Book a 15-min demo for one-on-one 10DLC guidance. 63 Ratings Visit Website 800.com 800.com is a business phone and call tracking platform that helps small and growing businesses understand, manage, and respond to inbound calls more effectively. The platform provides local and toll-free numbers, call tracking, call recording, voicemail, SMS, and detailed call reporting so teams can see where calls come from and how they’re handled. Businesses use 800.com to track phone leads across websites, ads, social media, and offline marketing, improve response times, and follow up on missed calls. With integrations for Google Ads, GA4, Meta, Microsoft Ads, and popular CRMs, 800.com connects call data to marketing and sales workflows. The platform is easy to set up, flexible as businesses grow, and designed to turn phone calls into clearer insights and better customer experiences. 2,436 Ratings Visit Website Aircall Aircall is an AI-powered customer communications and intelligence platform that unifies phone, messaging, and call center operations. Designed for sales and support teams, it enhances every interaction with features like AI Voice Agents, real-time conversation coaching, and integrated WhatsApp messaging. With powerful analytics, call recording, and shared inboxes, teams gain clarity and can resolve customer issues faster. The platform is easy to set up, offering quick number claiming, seamless integrations, and customizable workflows. Trusted by over 23,000 companies worldwide, Aircall helps businesses improve connection rates, boost CSAT scores, and streamline onboarding. By combining automation with human-first AI, Aircall reduces busywork so teams can focus on building better customer relationships. 1,838 Ratings Visit Website CrankWheel Share your screen instantly while on a phone call with CrankWheel, for an engaging presentation. Send a link by text message, WhatsApp or email and the viewer can view it in any browser, on any device without installing anything. Designed for ease of use, CrankWheel is the best solution for sharing a screen with customers for business deals. CrankWheel is used to complement calls by insurance agents, mortgage advisors, solar advisors, digital agencies, educators and customer support specialists. Close deals on the first call! We show you whether they're paying attention. Over 50,000 users share their screen effortlessly with any prospect no matter their technical skill or device choice using our Chrome Extension. CrankWheel works over bad network connections, on obscure devices and old browsers. Mac, PC, iOS, Android, Internet Explorer, Blackberries - it always works! 240 Ratings Visit Website iPlum iPlum is a mobile first solution for business professionals. iPlum works on your existing smartphone without changing carriers. Get best call quality & text in any situation. Give a professional touch for your business with phone tree virtual extensions. Works well for both large businesses and solo professionals. Promptly respond to your calls & texts during business hours and send them directly to your voicemail during non-business hours. Organize your team with a centralized portal. Add and manage iPlum users with different profiles and permissions in a corporate account. Tell your customers you care by automatically sending smart business text for missed calls or texts. Attach a signature for your texts. Texting in legal or healthcare business requiring HIPAA compliance, use secure channels with encryption. Your clients get FREE iPlum app to send you secure texts. It is critical to protect client data as per privacy and security regulations. 9,148 Ratings Visit Website Squaretalk Squaretalk is a powerful contact center solution that transforms how modern teams connect with prospects and customers, convert sales opportunities, and grow their operations. The combination of AI Voice Agents, calling, power dialing, WhatsApp Business messaging, SMS, email, AI-powered automation, and affordable scalability ensures that companies of all sizes shorten their sales cycle and elevate outreach without additional complexity or costs. Squaretalk’s platform offers omnichannel communication, powerful call-handling features, automated transcripts, sentiment analysis, contact management, customizable workflows, advanced reporting, and enterprise-grade security. The internal chat allows for quick sync, better mentoring, smoother escalations, and the unification of internal and external communication in one platform. With local numbers in 150+ popular and niche destinations, we enable businesses to establish and maintain a local presence, build trust, and support their global expansion. 313 Ratings Visit Website CallTrackingMetrics CallTrackingMetrics is the only SaaS platform that uses call tracking and conversion intelligence to inform contact center automation—resulting in a more personalized customer experience. Discover which marketing campaigns are generating leads and conversions, and use that data to automate call flows and power your contact center. Unify communications across your entire organization with our phone, text, online form, and live chat tools. More than 100,000 users around the globe trust CallTrackingMetrics to manage communications for their marketing, sales, and service teams. Call tracking features include reliable dynamic number insertion (DNI) for session-level attribution, local, toll-free, and vanity tracking numbers, and omnichannel attribution across calls, texts, form fills, and chats. Key contact center features include a browser-based softphone, smart routing options, SMS campaigns, automated call scoring, and smart dialer functionality. 939 Ratings Visit Website
About Make a single call to CallMultiplier, or use our website to enter a text message, and we will multiply it and quickly deliver your important recorded voice or mass text message to everyone in your group. CallMultiplier gets important messages out quickly and efficiently for groups of all types and sizes. We're always available when you need us. Whether that's late on a Saturday night, or early on a Tuesday morning, you can speak with a real CallMultiplier employee in our Oklahoma City offices who is eagerly awaiting the chance to help you! Try our service risk free! We believe so strongly that our voice broadcasting and mass texting service will meet your needs, we will refund 100% of your money should you cancel for any reason in the first 30 days. Your time is precious, and you have an important message that you need to get out immediately to everyone in your group. CallMultiplier will solve your problem and help you communicate faster and easier than ever before.	About String is a web-based SaaS platform that modernizes business texting, voice calling, and direct messaging across industries. Accessible from desktop or mobile, it provides a unified interface for automated and conversational SMS campaigns, mass text messaging, and voice communications. Users can import contacts, apply tags for segmentation, and create personalized campaigns using preformatted message templates. Keyword responses enable opt-in lead generation and promotions, while integrations with Zapier, Salesforce, Mailchimp, Shopify, Slack, QuickBooks, and thousands of other apps automate workflows and sync data across systems. Wi-Fi calling and support for multiple numbers, existing landlines, or new local, toll-free, premium, or vanity numbers allow seamless voice and text messaging from one application. Built-in dashboards track open rates, response times, conversion metrics, and customer engagement trends, freeing teams to focus on strategy rather than manual processes.
Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Not Supported Mac Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Supported iPad Supported Android Supported Chromebook Not Supported
Audience Teams, companies, and individuals searching for a solution to call or text a group of people	Audience Businesses interested in a solution to automate marketing, customer support, and lead generation
Support Phone Support Supported 24/7 Live Support Supported Online Supported	Support Phone Support Supported 24/7 Live Support Supported Online Supported
API Offers API Supported	API Offers API Not Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing $7.99 per month Free Version Not Supported Free Trial Not Supported	Pricing $19.99 per month Free Version Supported Free Trial Not Supported
Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software

Training Documentation Supported Webinars Not Supported Live Online Supported In Person Not Supported	Training Documentation Supported Webinars Not Supported Live Online Supported In Person Supported
Company Information CallMultiplier Founded: 1995 United States www.callmultiplier.com	Company Information String United States www.joinstring.com
Alternatives Sigma Voice	Alternatives TextBox
CallingPost CallingPost Communications	Text My Main Number
Cell Comm Next	Business Texting TextBetter
Call Loop	Pony Express HQ
InterCloud9 Simple Messaging Solution InterCloud9 View All	WEBTEXT View All
Categories SMS Marketing Supported Voice Broadcasting Supported	Categories SMS Marketing Supported
SMS Marketing Features 2-Way Messaging Supported Artificial Intelligence Not Supported Contact Management Supported Mass Texting Supported Message Personalization Supported MMS Supported Mobile Coupons Not Supported Mobile Keywords Supported Polls / Voting Supported Reporting/Analytics Supported Scheduled Messaging Supported Shortcodes Not Supported Text-to-Win Not Supported
Integrations Bookafy Not Supported Campaign Monitor Not Supported CompanyCam Not Supported Eventbrite Not Supported Google Ads Not Supported Instagram Not Supported Instagram Ads Not Supported LinkedIn Not Supported MeisterTask Not Supported Meta Ads Not Supported OnePageCRM Not Supported Pabbly Connect Not Supported Perspective Funnels Not Supported Pipedrive Not Supported Planning Center Not Supported Podio Not Supported Process Street Not Supported Square POS Not Supported Unbounce Not Supported Xero Not Supported Show More Integrations	Integrations Bookafy Supported Campaign Monitor Supported CompanyCam Supported Eventbrite Supported Google Ads Supported Instagram Supported Instagram Ads Supported LinkedIn Supported MeisterTask Supported Meta Ads Supported OnePageCRM Supported Pabbly Connect Supported Perspective Funnels Supported Pipedrive Supported Planning Center Supported Podio Supported Process Street Supported Square POS Supported Unbounce Supported Xero Supported Show More Integrations View All 70 Integrations
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