Whether you’re not confident in your writing abilities and want to make sure that your next email is perfect, or just want to double-check your writing, spelling and grammar checkers can be really useful.

There are plenty of reasons you might end up needing a spelling or grammar checker. But if you want to avoid installing an entirely new program or extension to your browser, then you might struggle to find something.

Luckily, you don’t have to search any longer. Here are six of the best download-free spelling and grammar checkers available online.

1. Hemingway App

A Screenshot of Hemingway App's Landing Page

The very first entry onto this list is Hemingway App. Inspired by the American author of the same name, this web service allows you to quickly and easily learn a lot about your writing and how you might be able to improve it.

Hemingway App functions at its core as a text editor. You’re able to write whatever you need to write directly into the web page. If you would rather write out whatever it is that you’re writing somewhere else, however, that’s perfectly fine, too. All you need to do is copy your writing into the editor.

From there, Hemingway App will automatically highlight your writing in a variety of colors. Yellow and red highlighted sentences are difficult to read, with red sentences being more difficult to understand than yellow ones

Purple highlights indicate words that Hemingway App can replace for more forcible writing, and blue highlights adverbs. Green highlights are for instances of the passive voice.

Hemingway App also displays how many words your writing is, as well as the characters, letters, and more. It also shows predicted reading time and readability measured in grade level.

2. LanguageTool

A Screenshot of LanguageTool's Landing Page

If you’re searching for something that you can use in a hurry but can still integrate into just about anything you might need, then LanguageTool might be a good choice for you.

LanguageTool highlights spelling, punctuation, and style errors in a variety of different colors. You can copy and paste anything that you’ve written right into their editor, or simply write it out there in the first place.

Related: The Best Ways to Spell Check in Google Chrome

Support for multiple languages is also featured in LanguageTool, and impressively, you can upload Word documents directly into LanguageTool if Word’s default spelling and grammar checks aren’t good enough.

LanguageTool does have a limit of only 10,000 characters, however. You can increase this limit if you’re willing to pay for more premium options, which also include more extensive grammar, punctuation, and style checking, as well as a number of other features.

3. Sentence Checker

A Screenshot of Sentence Checker's Landing Page

Sentence Checker takes a straightforward and no-nonsense approach to spelling and grammar checking. Using it is simple, all you have to do is either type or paste your text right into the text box.

With one click, you can check your text, which Sentence Checker will run through its proofreading software and return to you with spelling errors, grammar errors, and style issues all highlighted in a variety of colors.

Related: How to Fix Microsoft Word Spell Check Problems: Tips and Fixes

If what you’re looking for is something that is readily available and easy to use, then Sentence Checker might just be the best option for you.

4. Online Spellcheck

A Screenshot of Online Spellcheck's Landing Page

Next on the list is Online Spellcheck. If you’re looking for something that won’t automatically update as you write, while still leaving you with plenty of information to work with.

Online Spellcheck allows you to insert any text into its editor, which it then processes. It will automatically correct glaring mistakes for you, while less obvious ones it will highlight for you to assess personally.

Online Spellcheck’s approach is a little more simplistic than some others but is without limitations. You can upload huge texts without fear of there being any limit on the spell check, though particularly long documents might take a little longer than shorter ones.

5. Online Correction

A Screenshot of Online Correction's Landing Page

If you’re looking for a spell checker that will dynamically point out mistakes that you might have made while still having the option for more information once you’re finished, consider looking into Online Correction.

Online Correction works as many others on this list do, by highlighting any perceived mistakes as you write. You can hover your mouse over any of these errors to see a description of it and a list of possible corrections.

Related: How to Spell and Grammar Check in Excel

Once you’re finished with whatever it is that you wanted to write, you can then submit the text for a more thorough examination. Online Correction will run through and tally all the mistakes of each type to make it easier to identify.

6. Writer

A Screenshot of Writer's Landing Page

Finally, we have Writer. Writer is an online grammar checker with integrations available for most browsers. Its main purpose is to help writing sound more professional by correcting spelling and grammar.

Writer does this through an artificial learning approach, relying on feeding a deep learning system with millions of examples so that Writer’s AI can get a good feel towards what does and does not sound appropriate in the workplace.

With the free version of Writer, this means fairly straightforward corrections: grammar, spelling, punctuation. If you’re a professional individual, you can expand these options by subscribing to Writer’s premium plan, which includes additional features such as writing with clarity, delivery, and inclusivity.

Where Writer really shines, however, is with its plans built for companies and teams. Here, Writer allows you to set up a style guide and manage terminology.

This way, it becomes easier than ever for you to ensure that everyone in your team or company is using the same language when dealing with others.

Online Tools Aren't the Only Way

Online spelling and grammar checkers are incredibly useful tools for when you need to quickly double-check your writing, but they aren’t the only tool you ought to have in your arsenal.

When it comes down to it, there’s a wide variety of options out there that you might elect to use. The only thing stopping you from using more than one or mixing and matching is how prudently you want to ensure that your writing excels.

Consider trying other spelling and grammar checkers, both free and premium. AutoCorrect, for instance, can achieve so much.