There are a lot of commercial automation tool available however if need and budget is limited then It is not always advisable to go for commercial tools.
there are options available for in open source and free(with limited features tool/plugin. Below are 2 open source/free available tools/plugin for browser automation need.
1- IMacros – For IE, Chrome and Firefox Automation
Overview – iMacros is powerful automation plugin which is designed to automate the utmost repetitious tasks on the web. Along with the freeware version, iMacros is available as a proprietary commercial application.If there’s an action you have to do repeatedly, just record it in iMacros. The next time you want to do it, the entire macro will run at the click of a button! With iMacros, you can rapidly and easily fill out web forms, remember passwords, generate a webmail notifier, and more.
There are various task on web browser which are repeatable innature and such free addin can make life easier by immolating manual effort through automated flow.
User can keep the macros on your computer for your own use, use them within bookmark sync / Xmarks or share them with others by embedding them on your homepage, blog, company Intranet or any social bookmarking facility as bookmarklet. The uses are restricted only by your imagination!
Sharing of macros is one of the strength of the Addin.
Popular uses are as web macro recorder, form filler on steroids and highly-secure password manager (which is 256-bit encryption).
Web developers use iMacros for web regression testing, performance testing and web transaction monitoring. It can also be joint with Google Speed Tracer, Firebug and other web development and test tools. XPath support is included.
You can associate iMacros with ad-blocking extensions like AdBlock, FlashBlock and AdThwart to speed up the web browsing.
It does not work in IE Tab, but for IE there is iMacros for Internet Explorer.
Macros recorded with iMacros for Chrome can be replayed in iMacros for IE and iMacros for Firefox without changes! All iMacros versions combined have millions of active users, making it the most popular web browser automation tool.
For more information please see http://wiki.imacros.net/iMacros_for_Chrome
and the active user forum at http://forum.imacros.net/ .
Browsers supported – Chrome, IE and Firefox
Licence Type-Free with Limited features
2- CBA –Chrome browser automation
Overview– CBA is automation system for chrome browser which is intended to help people with some of their everyday routine work and also to deliver collection of ready valuable functions that will help them to answer such issues like:
Chrome browser automation is an open source plugin which works like an fully automated tool.
• Filling lenthy forms
• Repeatable action on a web page
• Navigation to your favorite content
How it works: At a high level below are the steps on how the work flow is-
• Create project
• Edit automation
• and Play
Reference and detailed tutorial available- http://chrome-automation.com/tutorials
Browsers supported – Chrome
Summary– For small processes where RoI on using commercial tools is not much can explore free plugins with limited features and open source tools.A commercial tool purchase is only needs to be an option when the saving is sufficient enough else cost of such tools become overburden expenditure.
Whether to opt for a commercial tool or to limit automation with plugins/utilities or RPA tools like UIPath needs to be done in process feasibility and tool analysis.
For full fledged Business Process Automation if budgets are limited and processes are small, volume of work is limited then tools like UI Path are most preferred.