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OpenSide
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  • Windows · macOS
  • Freeware
  • Your Chrome · Edge

Write the web task you want, and AI does it in your own browser.

Hand off searching, clicking, typing and tidying results into tables with a single chat message. No new browser to install and no signing in again: it works in the Chrome or Edge you are using now and gives you a short report.

Latest 1.1.2 · Installer · Portable · macOS

OpenSide chat screen — an answer that looked up today's weather in Seoul and put morning and afternoon temperatures and chance of rain in a table

Your tabs stay yours

Not a new browser, but the one you already use

You do not need to switch browsers or sign in to every site again to use AI.
OpenSide attaches to the Chrome or Edge you use every day and works right there.
It works as usual even on sites that are wary of unfamiliar browsers.

No new-browser blocks

Freshly launched AI browsers and automation browsers sometimes have their sign-ins blocked, or face security checks again and again, on big sites such as Naver and Instagram. OpenSide works in your usual browser with your sign-ins as they are, so this happens less often.

Your profile and sign-ins, as they are

It works in your everyday profile, with your bookmarks, extensions and sign-ins. Sites you are already signed in to need no new sign-in.

Your tabs stay yours

The AI moves only in the tab it is working in. That tab keeps working even in the background, so you can carry on in your other tabs. The AI closes the tabs it opened before it answers, and never closes yours.

It clicks, the way you would

No per-site integration needed: it reads the page, clicks buttons and types text. Writing on Naver Blog, Tistory and Blogger, Gmail, Google Docs and Sheets, Notion, Slack, YouTube, Naver Real Estate and others get site-specific handling that is faster and more accurate.

Hand it a task

This window reproduces the program screen.
Click a task below to see how the AI works, played back from a prepared script.
No real AI is called.

OpenSide
New chat
CodexGPT-6 LunaHigh

When it finishes, the progress lines fold into one line such as 34s of work. Click it to unfold them again. Click the title at the top to rename the chat.

Sites, prices and mail contents are examples for illustration.

Hand it off and get on with other work

You set how far it goes, in words

Write "compare" or "just draft it", and it will not do anything irreversible such as sending, paying, deleting or publishing. Write "send it" or "order it", and it goes all the way to the last button without asking again. When a step needs a person, such as a phone verification code or approval in a banking app, it brings that tab to the front and tells you what to do.

Get it as Excel or CSV

Collected data comes out as an Excel (.xlsx) file. Values with leading zeros, such as 007 or phone numbers, stay intact. Write "as CSV" to get a CSV that keeps non-English text from breaking.

Telegram when you are away

Link once by scanning a QR code, then give tasks and get answers and files in Telegram on your phone. No need to build a bot. Verification codes can be answered in Telegram too.

Attach and upload files

Attach images, text or CSV files for it to read, or have it upload them to a site. Folders you choose can be read without attaching (read only, never written).

Find pages you saw before

Turn it on and it records the pages you read and the program windows you used, then uses them for questions like "that article I saw yesterday". Records are kept for 30 days, and pages with a password field are not recorded. It is off at first.

Several AI accounts

Register a ChatGPT account sign-in and Claude, OpenAI or Gemini API keys, then switch account, model and reasoning level right at the bottom of the chat. A ChatGPT account also shows how much usage is left.

Less fumbling over time

Each time it finishes, it remembers confirmed things such as how a site works or facts you told it, and uses them in the next chat. Pick one of your last 15 chats from Recent sessions to continue.

Program preview

OpenSide
Find today's weather in Seoul and put the morning and afternoon temperatures and chance of rain in a table
Find today's weather in Seoul and put the morning and afternoon temperatures and chance of rain in a table
34s of work
Open weather.naver.com
Search for Seoul
Open today's forecast
Read temperatures and chance of rain

Here is today's forecast for Jung-gu, Seoul.

TimeTemperatureChance of rain
Morningabout 18–22°C20%
Afternoonabout 23–24°C60%

The afternoon will be cloudy, with rain at times.

CodexGPT-6 LunaHigh

How to

Collecting information from several sites into a table

Write what to collect and in what form you want it. When it is done, a Download card appears in the chat; after saving, open it directly with Open file · Open folder.

Filling in the same form many times

Ask something like "submit an application for each person on this list". It fills in fields, check boxes and drop-down lists, and checks the result before moving on so nothing is submitted twice. If the list is in a file, attach the file.

Posting to a blog

Ask something like "write this up as a Naver Blog post and publish it". On Naver Blog, Tistory and Blogger it fills in the title, body, subheadings, images and tags the way each site expects. Attach images to upload as files. If you only want a draft, write "draft only".

When a verification code or banking app approval is needed

The AI brings that tab to the front and tells you what it needs. Handle it in the browser yourself, or type the code in the chat box and it carries on. It ticks "I'm not a robot" check boxes itself and only hands over picture puzzles.

Adding instructions mid-task

You can type in the chat box even while the AI is working. What you write is passed on to the task in progress. To make it stop, click Stop.

Having it read files on your PC or upload them to a site

Attach files with the paper clip button (Attach files). It looks at images and reads text and CSV files. Your original files are left untouched. If attaching every time is a chore, add folders in Preferences → Files. The AI only reads those folders.

Finding a page you saw before

Turn on Record pages I read and apps I use in Preferences → Context, and you can ask things like "summarize that investment article I read yesterday again". List sites and programs not to record, separated by commas. Click the eye icon in the chat to pause, or Delete all to clear everything.

Giving tasks from your phone while away

Click Link now in Preferences → Remote, scan the QR code with your phone camera and tap Start in Telegram. That is it. Now send tasks in Telegram, and OpenSide on your PC does them and replies. OpenSide must be running on the PC, so turning on Run at boot helps.

Using several AI accounts

Click Add in Preferences → Account to choose Sign in to Codex (ChatGPT account), Claude API key... · OpenAI API key... · Gemini API key.... For OpenAI, changing the address lets you use other services that work the same way. Pick the account for new chats with Set default.

Keeping it running after closing the window

With Minimize to tray on close on, clicking the window's × sends it to the tray instead of quitting. To quit completely, right-click the tray icon and choose Quit. To keep it beside your browser, turn on Always on top.

Choosing between Chrome and Edge

It works in the browser where Remote debugging is on. If both have it on, the Windows default browser comes first. If a connection is needed after restarting the browser, the A browser connection is needed window tells you what to do.

Free. Anywhere, no strings.

Installer Recommended

  • Runs as soon as setup finishes
  • Run at boot turned on
  • Windows 10 · 11 (64-bit)
Get the installer

Portable (ZIP)

  • Unzip and run OpenSide.exe
  • Starts with Run at boot off
  • Same features as the installer
Get the portable

macOS

  • macOS 13 or later
  • Intel and Apple Silicon (one file)
  • Menu bar icon instead of the tray
Get the macOS version
  • Browser Chrome or Edge on Windows, Chrome on macOS
  • AI account A ChatGPT account, or a Claude, OpenAI or Gemini API key
  • Internet Needed for site tasks and the AI connection
  • Freeware At work, at home, in government or at school. AI usage is billed under your own account or API key plan
Recent changes

Version 1.1.2

  • Fixed keyboard input not reaching the text field after returning from another app on Windows
  • Added a quit confirmation for the tray and macOS menu bar quit commands and macOS Cmd+Q
  • Added a Windows setting to minimize the app to the tray when closing its window

Version 1.1.1

  • Added support for file attachments
  • Added macOS support

Version 1.0.2

  • Reduced browser disconnections during long periods of inactivity on affected systems
  • Fixed the window losing its always on top setting and falling behind the browser after a disconnection
  • Fixed the disconnection notice remaining visible after the browser reconnected

OpenSide does not update itself. When it starts, it tells you about a new version and opens the download page if you choose to get it.

More free programs from Kilho.net

Frequently asked questions

Is it really free?

Yes. OpenSide is freeware: use it free anywhere, at work, at home, in government or at school, and share it freely. AI usage, however, follows the plan of the ChatGPT account or API key you use.

Will sites like Naver or Instagram block it?

Some sites treat a browser they have never seen as an unfamiliar device and block the sign-in or ask for security checks over and over. OpenSide works in your usual browser where you are already signed in, so this is less common. If a security check still appears, the AI ticks "I'm not a robot" check boxes itself, and for steps that need a person, such as picture puzzles or phone verification, it brings that tab to the front and tells you.

Which AI does the work?

Sign in with your ChatGPT account (Sign in to Codex) or add a Claude, OpenAI or Gemini API key. You can register several and switch account, model and reasoning level per chat.

Where is my information stored?

AI accounts and API keys, chat history, page records and memories are all stored only in your user folder on this PC (not separately encrypted; protected by the operating system's user folder permissions). Requests to the AI go straight to each AI provider without passing through an OpenSide server, and carry the page content needed for the task plus memories and parts of matching records. With Telegram remote on, only answers, created files and short status lines pass through the Kilho.net relay server. Otherwise it connects to the Kilho.net server only to check for new versions, to report errors when the program crashes, and when you send feedback yourself (which includes part of the chat history).

Could the AI pay for something or send mail on its own?

If you only ask it to read, as in "compare" or "just draft it", it will not do anything irreversible such as sending, paying, deleting or publishing. Only tasks you hand over, such as "send it" or "order it", go all the way to the last button. It is best to state clearly how far it should go. Even mid-task, clicking Stop stops it.

Can I use my computer while the AI works?

Yes. The AI moves only in the tab it is working in, and that tab works in the background just as in front. Keep using other tabs in the same browser or other programs.

Does it run on macOS?

Yes. On macOS 13 or later, the same file runs on both Intel and Apple Silicon Macs. It works in Chrome, and its icon sits in the menu bar instead of a tray. To connect, enter the port number shown on Chrome's settings page into the connection window. Uploading files to sites needs the Accessibility permission.

How is the display language chosen?

With Language set to Auto, it follows the operating system's display language; you can also pick one in Preferences → General. The AI's progress lines and answers follow the language of your message.

How do updates work?

For security and to avoid false antivirus alarms, it does not update itself. When it starts, it tells you if a new version is out and opens the download page if you choose to get it.