
MobaXterm
KiTTY
ConEmu
iTerm2
GNOME Terminal
Gnome Terminator
SecureCRT
Popular free terminal application. Mostly used as an SSH client.

reCAPTCHA
hCaptcha
Cloudflare Turnstile
Akismet
Private Captcha
mosparo
Cap Captcha
ALTCHA is a free CAPTCHA alternative that uses a proof-of-work mechanism to protect your website, and online services from spam.

Which is more popular?
Based on our record, ALTCHA seems to be more popular. It has been mentioned 4 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | chiark.greenend.org.uk | altcha.org |
| Pricing | — | |
| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of PuTTY yet.
ALTCHA uses a proof-of-work mechanism to protect your website, APIs, and online services from spam and unwanted content. Unlike other solutions, ALTCHA is free, open-source and self-hosted, without external services, does not use cookies nor fingerprinting, does not track users, and is fully...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
PuTTY is recommended for system administrators, developers, network engineers, and anyone who needs to perform remote command-line operations on a computer or server using the SSH protocol. It is particularly useful for users who are working on Windows systems.
No analysis of ALTCHA yet.
Walkthroughs and reviews on video.
MASSIVE STORE PUTTY REVIEW!
More videos
No ALTCHA videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing PuTTY and ALTCHA.
ALTCHA's answer:
What makes ALTCHA unique is that it is free, open-source and self-hosted, without external services, does not use cookies nor fingerprinting, does not track users, and is fully compliant with GDPR. Unlike other captcha solutions, ALTCHA does not require users to solve puzzles or captchas and uses a proof-of-work mechanism instead.
ALTCHA's answer:
Here are some key reasons why a person should choose ALTCHA over its competitors:
So in summary, ALTCHA's privacy compliance, open design, accessibility, machine compatibility and modern approach give it clear advantages over competing captcha solutions.
ALTCHA's answer:
JavaScript and Svelte.
ALTCHA's answer:
Our primary audience for ALTCHA Forms includes enterprises, medium and small businesses, non-profits, and individuals who need a reliable, secure, and compliant solution for data collection and management. Whether you're a large corporation dealing with extensive regulatory requirements, a small business looking to protect customer and employee data, a non-profit organization managing sensitive information, or an individual seeking robust data security, ALTCHA Forms provides the tools and features necessary to meet your needs. With a focus on compliance, user-friendly design, and advanced security measures, our platform is tailored to support diverse users in navigating complex regulatory landscapes and ensuring data protection.
Share your experience with using PuTTY and ALTCHA. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Instead of a full-fledged PuTTY alternative, SuperPuTTY is an add-on that changes how PuTTY looks. It also brings several additional features that are missing from the original PuTTY implementation.
SuperPuTTY requires you to install the original PuTTY for the application to install and run. Besides that, the SuperPuTTY is an advanced PuTTY version with secure SSH connection protection with SCP and SFTP file...
Putty is a popular SSH and telnet client for Windows. It's lightweight, fast, and easy to use. Putty offers all the basic features you need for remote desktop access, including SSH, telnet, rlogin, and raw TCP...
We have no reviews of ALTCHA yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Tracking PuTTY since Mar 2021.
ALTCHA won on the boring things. It is open source, self-hosted and collects nothing, and it ships official libraries in both Go and PHP, the two languages our two layers already speak. So the same protocol runs twice on every store, by... - Source: dev.to / 15 days ago
The captcha on orkestr is Altcha. Self-hosted, no third-party JS, no Google, no behavioral tracking. Users don't see a puzzle. There's a single checkbox and a quiet "verifying..." while the browser does some math. About a second, total. - Source: dev.to / 5 months ago
Here's how PoW works for form protection (using the ALTCHA wire format):. - Source: dev.to / 7 months ago
When comparing PuTTY and ALTCHA, you can also consider the following products.

Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Compare MobaXterm to PuTTY or ALTCHA:

reCAPTCHA is a free security service that protects your websites from spam and abuse.
Compare reCAPTCHA to PuTTY or ALTCHA:

KiTTY is a fork from version 0.70 of PuTTY. It adds extra features to PuTTY.
Compare KiTTY to PuTTY or ALTCHA:

Do you use a captcha to keep out bots? hCaptcha is a drop-in replacement for reCAPTCHA that earns website owners money and helps companies get their data labeled.
Compare hCaptcha to PuTTY or ALTCHA:

ConEmu-Maximus5 is a full-featured local terminal for Windows devs, admins and users. Get better console window with tabs, splits, Quake style, copy+paste, DosBox and PuTTY integration, and much more.
Compare ConEmu to PuTTY or ALTCHA:

Cloudflare's service for any company to replace CAPTCHAs and deliver a better experience to web visitors.
Compare Cloudflare Turnstile to PuTTY or ALTCHA: