
TeraCopy
Ultracopier
Copy Handler
RoboCopy
ExtremeCopy
MiniCopier
KillCopy
FastCopy is the fastest copy, delete, & sync software on Windows.

Upload-Post
Buffer
Ayrshare
Hootsuite
getLATE.dev
Postiz
Publer
Postproxy is a unified API to publish, manage comments, direct messages, and reviews across Instagram, TikTok, LinkedIn, X, YouTube, Facebook, Threads, Bluesky, and more.

Which is more popular?
Based on our record, FastCopy seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | fastcopy.jp | postproxy.dev |
| Pricing | — | |
| Company | — | Startup from Germany · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of FastCopy yet.
Postproxy is a social media API for products that need more than publishing. Publish posts, manage comments, DMs and reviews, track post and profile analytics, and receive webhooks across major platforms. Built for SaaS products, automation workflows, and agents that need reliable social media...
What each product offers, as listed by its team.


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


No analysis of FastCopy yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Windows 8.1 vs UltraCopier vs Teracopy vs SuperCopier4 vs ExtremeCopy vs FastCopy
More videos
Postproxy Walkthrough: Social Media API for Publishing, Comments & DMs
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing FastCopy and Postproxy.
Postproxy's answer:
We were building a product for ads creation at scale with fancy templates management, different platforms with adaptive sizing. Then Nano Banana got released and made a product largely obsolete. Postproxy was basically a part of that product.
Postproxy's answer:
Postproxy is a production-grade social media API for SaaS products, AI agents, and multi-tenant platforms. It provides one API for publishing, comments, direct messages, reviews, analytics, webhooks, and OAuth account connections across Instagram, Facebook, Threads, LinkedIn, TikTok, X, YouTube, Pinterest, Google Business Profile, Bluesky, and Telegram.
Compared with publishing-only APIs and automation tools, Postproxy is designed for customer-facing products that require official platform integrations, explicit delivery statuses, automatic retries, profile-group isolation, predictable pricing, and infrastructure built for production workloads.
Postproxy's answer:
Postproxy combines production-grade publishing infrastructure, engagement, and analytics in one social media API. Every publishing request has an explicit status and human-readable failure reason, failed deliveries can be retried automatically, and the same platform also handles comments, direct messages, reviews, profile analytics, and webhooks.
Postproxy uses official platform APIs and OAuth flows, supports isolated profile groups for multi-tenant products, and provides integrations for n8n, Make, and Zapier, as well as an MCP server for AI agents.
Postproxy's answer:
Postproxy is primarily built for developers and product teams creating SaaS platforms, AI agents, marketing tools, and multi-tenant social media products. It is also used by agencies and automation specialists that manage social accounts for multiple customers.
Individual creators can use Postproxy, but the platform is optimized for software products and production workflows rather than manual social media management.
Share your experience with using FastCopy and Postproxy. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


FastCopy offers integration with the Windows shell integration along with x64 capabilities. You can specify a custom buffer speed in MB. In the Include Name and Exclude Name boxes, enter a text that your file name...
FastCopy is one of the simplest and fast copy software for copying data at great speed. It integrates with Windows shell and has awesome features to surprise you as it has different methods to copy large files as per...
The interface may not be the best you can wish for, but this Windows file copy utility is one of the best of its kind. FastCopy is a free PC program that helps you to quickly move your files around (from one drive or...
We have no reviews of Postproxy yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


It's fortunately been years since I have used Windows, but it looks like the old staples are still ahead of the curve: https://fastcopy.jp/ https://www.codesector.com/teracopy (I have certainly forgotten at least one...). - Source: Hacker News / 10 months ago
Tracking Postproxy since Feb 2026.
When comparing FastCopy and Postproxy, you can also consider the following products.

TeraCopy is a compact program designed to copy and move files at the maximum possible speed, providing the user with a lot of features.
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Social Media API for developers. Post to TikTok, Instagram, YouTube, Facebook & 19 more platforms with one API call. MCP server for Claude/ChatGPT, white-label for SaaS. 70k+ users.
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SuperCopier replaces Windows explorer file copy and adds many features: Transfer resuming, transfer...
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Buffer makes it super easy to share any page you're reading. Keep your Buffer topped up and we automagically share them for you through the day.
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the open source, free file copy utility that is: fast, highly customizable
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Powerful APIs that enable you to send social media posts effortlessly. Post and manage your users social account via an API.
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