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Professional solutions for your company to send and receive SMS. Online, via gateway, by email or directly in your app. Easy. Fast. Reliable.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | seven.io | diffyn.com |
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| Company | Startup from Germany · 2003 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Send SMS Receive SMS Make text-to-speech calls Perform caller name lookups Perform mobile number portability lookups Perform home location register lookups
No description of Diffyn yet.
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


No analysis of seven.io yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Sending SMS in Bagisto with our plugin | sms77.io
The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing seven.io and Diffyn.
seven.io's answer
The primary audience for seven.io includes businesses and organizations seeking reliable, scalable, and GDPR-compliant messaging solutions. Its services are ideal for industries requiring SMS, voice, and RCS communication, such as e-commerce, healthcare, finance, and customer service. Small businesses benefit from its no-contract flexibility, while larger enterprises value its robust API and workflow integrations. Companies focused on data privacy and transparent pricing also align with seven.io’s offerings.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
seven.io's answer
The story behind seven.io is one of evolution and adaptation in the messaging and communication industry. Originally founded as sms77 nearly two decades ago, the company started as a platform focused on providing affordable SMS services for individuals. Over time, as the scope of messaging expanded, the company recognized the need to cater to a broader audience and incorporate modern, scalable solutions. This led to the rebranding as seven communications GmbH & Co. KG in 2021, marking a shift toward offering comprehensive messaging services beyond SMS.
Seven.io now positions itself as an all-encompassing platform for businesses, organizations, and freelancers, supporting efficient communication through services like SMS, voice messaging, and emerging technologies such as CCaaS (Contact Center as a Service). The rebrand also emphasized international growth and expanded functionality, with new tools for automating SMS opt-ins, managing OTPs (One-Time Passwords), and integrating communication platforms without third-party tools like Zapier.
The new name, “seven,” reflects the company’s commitment to simplicity, reliability, and scalability in global communications. It symbolizes their evolution from a basic SMS service to a robust provider of multichannel communication solutions optimized for diverse business needs and GDPR compliance.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
seven.io's answer
The primary technologies behind seven.io include a robust set of tools and protocols designed to facilitate reliable and scalable communication solutions. The platform’s technology stack highlights include:
1. REST/HTTP API: This serves as the core of seven.io’s communication solutions, enabling seamless integration for SMS, voice messages, RCS, and other messaging services. Developers can interact with these services using HTTP requests, ensuring flexibility and ease of implementation for various applications.
2. Programming SDKs: seven.io supports multiple programming languages through its SDKs, including Python, PHP, JavaScript, Ruby, Go, and more. These SDKs streamline integration and provide developers with tools tailored to their chosen languages.
3. SMPP Protocol: For businesses requiring high-throughput SMS capabilities, the platform offers SMPP (Short Message Peer-to-Peer), a protocol widely used for messaging solutions in telecommunication environments.
4. Webhooks: To enable real-time updates, seven.io provides webhook capabilities, allowing developers to automate workflows and receive instantaneous notifications about message delivery, status changes, and responses.
5. Encryption and Security: The platform emphasizes secure communication with features like encryption, IP whitelisting, and secure API authentication methods, including OAuth 2.0.
Diffyn's answer:
React, Next.js, POSTGRESQL
seven.io's answer
seven.io's answer
seven.io stands out as a versatile messaging provider offering robust solutions for businesses to streamline customer communication. Key competitive advantages include:
1. Comprehensive Services: Supports SMS, text-to-speech calls, Rich Communication Services, number validation, and seamless integration with major platforms.
2. Data Privacy: Fully GDPR-compliant, with data processed in Germany.
3. Flexibility & Scalability: No minimum contracts or turnovers, adaptable for small to large-scale needs.
4. Transparent Pricing: Pay-as-you-go model without hidden fees.
5. Ease of Use: User-friendly API and tools for automating workflows like personalized SMS campaigns and reminders.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
seven.io's answer
Seven.io is an excellent choice over competitors due to its unique combination of flexibility, transparency, and robust features. It provides GDPR-compliant services with data processing in Germany, ensuring privacy and security. Its scalable, pay-as-you-go pricing eliminates hidden fees and contractual commitments, accommodating both small and large-scale businesses.
Additionally, it offers seamless integration with major players, powerful APIs, and multiple messaging options (SMS, text-to-speech calls, Rich Communication Services). These features make seven.io a dependable and versatile partner for businesses seeking reliable and customizable communication solutions. More details can be found .
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Share your experience with using seven.io and Diffyn. For example, how are they different and which one is better?
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