Partners' testimonials about Devellar is an online tutoring service for students, who look for quality tutoring help for affordable price. Online service is the way out: you stay at home, make lesson request, and meet your tutor not live, but in a virtual classroom. In this case you pay much less than if you met with your tutor in a school or at home. We provide qualified tutors in about 50 subjects, including Math, English, Physics, Marketing, Economics, Programming, Biology and many others. All tutors provide their diploma and pass application tests. The service is available 24/7 – so you may choose any time convenient for you to get a lesson.

Tutorsclass project is aimed at helping tutors and students to connect with each other for educational purposes, violating country borders and thousand-mile distances. Tutorsclass offers you to get advantage of unique online tutoring product that is created exactly for online distance education. It includes:

  1. Online whiteboard with typing and drawing tools
  2. Live chat
  3. File upload option
  4. Math formulas creation tool
  5. Students and lesson tracking system
  6. Billing system
  7. Secure payment from students directly to tutors via Paypal
  8. Personal web-profile for each tutor

PlagSpotter – is a free online duplicate content checker tool developed by Devellar. The main strengths of PlagSpotter is the ability to not only find copies of your page(s) on the web by entering specific URLs one at a time, but also automatically track (on a daily or weekly basis) a set of URLs and get comprehensive reports on those who plagiarize (or repost with your permission) your content. is a free duplicate content checking service. Striving to make the process of online plagiarism checking as accurate as possible for every user, we created a free alternative to that allows users to upload a document and check it for plagiarism. Being established less than a year ago, it results now in more than 30k of regular users and 400k of checked documents. In our work we follow two basic principles – constantly improving our service and tuning in to customers’ feedback. The service is oriented on students and academic work. Our plans for the nearest future include entering market of Asia.

GrammarBase is an English grammar checking service. We are aimed at making the most accurate and error-free grammar checker that helps users to avoid mistakes in written English. The service is as easy as ABC: just copy-paste a text and you’ll get an instant report that analyzes mistakes into three categories – grammar, spelling and punctuation – and offers ways to correct them. Service is wired not only for students who study English, but for everyone using English in everyday or business life.

Seoroller is a SEO tool that serves to monitor current market situation as well as analyze and compare your competitors’ websites. Basic features include:

  1. position checking
  2. backlink monitoring
  3. traffic tracking
  4. tracking of your competitors
  5. notification by e-mail about all market chhanges in competitors list
  6. suggestions by keywords