Csipsimple is an open-source VoIP application for Android that enables users to make and receive voice calls over the internet using the SIP protocol. It integrates with the device's native dialer, allowing for seamless use of VoIP services alongside traditional cellular calls.

About Csipsimple
Csipsimple was an open-source VoIP application for Android, created to facilitate voice calls over the internet using the SIP protocol. It emerged around 2009, developed by Régis Montoya. The app aimed to provide users with a free, reliable alternative to traditional cellular calls by leveraging internet connectivity.
Strengths of Csipsimple included its open-source nature, integration with the native dialer, and support for multiple SIP accounts. Weaknesses involved occasional stability issues and a lack of updates over time. Competitors included Zoiper, Linphone, and Bria.
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How to hire a Csipsimple expert
A Csipsimple expert must have proficiency in SIP protocol, Android app development, and VoIP technologies. They should also be skilled in configuring SIP accounts, troubleshooting network issues, and understanding open-source software development practices.

Natã S.
Skills
A seasoned Full Stack Developer with a focus on computing, artificial intelligence, and data, specializing in artificial intelligence, mathematics, and efficient algorithms. Proficient in web and mobile programming, with extensive experience in multimedia streaming, financial and banking systems, and university systems. Dedicated to the continuous study of new technologies, optimization techniques, and best practices for developing high-performance systems.

Guilherme A.
Skills
Full Stack Developer with specialized expertise in .NET C#, ASP.NET MVC, Azure, Angular, React, Javascript, Node.js, as well as HTML and CSS. Proficient in the implementation of Scrum methodologies.

Julyse H.
Skills
Expertise in leadership, management, and team development, with a strong proficiency in creating web systems and microservices using .NET. Skilled in process and requirements analysis, as well as system integration. Contributed to the definition of architecture and the development of high-availability services designed to support significant access volumes.

Tarcio S.
Skills
An Information Systems student with expertise in full-stack web development, possessing proficiency in Node.js and React.js frameworks. Demonstrates advanced capabilities in JavaScript, HTML, and CSS, alongside solid experience in database management utilizing MySQL and MongoDB. Experienced in creating REST APIs and integrating external APIs, reflecting a strong foundation in both front-end and back-end technologies.

Salvador F.
Skills
An experienced leader in web and mobile development with a strong grasp of Scrum and Kanban methodologies. Adept at facilitating communication between business and IT departments, bridging gaps and ensuring smooth project execution. Proficient in a range of technologies including Flutter, React Native, React JS, CSS, with additional knowledge of Angular, Node.js, NestJS, VueJS, Sass, Python, AWS Cloud services, and IBM Functions/Watson. Skilled in utilizing data visualization tools such as Metabase and PowerBI, and familiar with development environments like Android Studio and VSCode. Possesses expertise in version control, employing Git, GitLab, and GitFlow strategies effectively.

Pedro M.
Skills
Front-end developer skilled in leading market technologies such as React Hooks, API Rest, TypeScript, Git Flow, Sass, and Styled Components. Experiences include participating in high-traffic projects and leading applications from conception to launch. Demonstrates the capability to rapidly assimilate new technologies, emphasizing the importance of continuous learning for the advancement of innovative and high-quality web solutions. Committed to crafting exceptional and optimized user interfaces while working collaboratively to fulfill project requirements. Actively seeking opportunities to apply expertise and further evolve as a developer.

Rodrigo F.
Skills
With extensive expertise spanning 23 years in the IT sector, the professional background includes a robust foundation of 8 years focusing on hardware and network management, complemented by 15 years dedicated to software development. Proficient in Dot.net C#, VB.net, Java, and JavaScript, the experience also encompasses working on projects involving Python, Dart, Node.js, .NET Core, WordPress, and React Native. The last 8 years were marked by a strong adherence to Agile methodologies, with a specialization in requirement gathering, architecture support, API engineering, messaging services, and the development of web applications and systems. The primary focus has consistently been on delivering solutions that enhance value and quality within technology-driven environments.

Thiago A.
Skills
Mathematics student with a burgeoning focus on data science and machine learning. Developed expertise in creating non-linear optimization algorithms utilizing Fortran. Seeks to leverage mathematical acumen in computing to enhance process efficiency and optimization.
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