I've added a new resource to Open Education Resouces page, NetProf. You can see the languages it supports on the main page, MSA is Modern Standard Arabic. It's free and created by the Defense Language Institute and MIT.
The core of the software lets you choose a word from your target language. It then compares your pronunciation with a native speaker. The helpful part is that it breaks the word or phrase into parts. Any section where you see red is considered inaccurate. It also gives you an overall score. While this all looks very scientific, and it gives you a percentage number, consider the feedback as a general guide.
Once you create a free account and choose your language, you can then search for a word or choose from the list. First play their sample of the word, then Record just below. Note, it's a bit unusual that you hold down the Record button while you speak and then release when you're finished. You can then play your recording, play the original native speaker again, and examine your score.
On the positive site, I noticed that it found sounds that I and most non-native speakers have trouble in German. For example, the "ü" sound does not exist in English, and you can see where I had some trouble. This isn't by any means 100% accurate, though, so take it as a general guide. I have a fairly neutral U.S. accent, and I still had some red marks when comparing English.
They also have a vocabulary practice section. You need to create a New List first. Once you do so, can click the other button to Add to List. When it's time to practice, you'll see the button above for Study lists. Once you're in your list, you can either choose Learn Pronunciation or Audio Vocabulary Practice. Somewhat oddly for vocabulary practice, it shows the the translation.
There's more information under the Analysis tab, but these two parts are the most likely to be useful for language learner. I found this site via a review in FLTMag, head there for a more thorough review and comparison with Forvu, an app with a similar function.
我叫顾梅。我有十四岁。我是加拿大人。 我会说法语，英语。我学习中文。 我想会读汉字为什么我三月要去中国。
Hello world!! Usually I'm relax and easy.
But most Japanese people are workerholic.
They thinking about tomorrow job, big salary and more.
All most worker holic people are negative thinking.
What do you think about that?
And where you are from about?
Sometimes I feel so stupid, I can't speak as fast as I want, it is so frustratig for me! But life is this, cotinuous learning. Now I need to do a presentation in English about a touristic topic, I chose "10 days-trip in Ecuador". As Next February I'm going to travel to my country (Ecuador) I though that it would be a nice way to prepare my own trip, but there are a large number or places to visiting and I have only two months, because I need to come back to Spain to do my last exam of University. Yes! In 2018 will end my degree, although I will have to continue learning English and Germany.
a tous ce que je considere comme de belle personne, mais je vous connaise pas. C `es ne pas important. Peut-etre que je vais a vous renctrontrer ice. ( je utilize google translate pour ecrire ) :) . Je suis de Barcelona, mais j`habite au Canada.
Mi nombre es Anthony, y me encanta español. Me encata todos lenguas, pero me encanta español porque me encanta las clases en escuela primera y secundaria. Bueno, me encanta mis clases in escuela primera, pero in esculea secundaria, no me gusta mis profesores. Así, me cambié a Latin en mi tercer ańo. En universidad, me traté a tocar un clase, pero no me gusta los otros estudiantes. Tengo miedo que voy a olvidar todo de mi español, porque ahora, no es necesario para mi a usarlo en mi trabajo o en mi vida. Quiero tener más tiempo y más oportunidad. ¿Pero, como?
Do you have some question about brazil? please, let me know.