Software Alternatives, Accelerators & Startups

Koofr VS s3-lambda

Compare Koofr VS s3-lambda and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Koofr logo Koofr

Koofr offers safe EU based cloud storage with 10GB free storage space for life and option to connect multiple cloud accounts (Dropbox, Google Drive, OneDrive). No cookies, no trackers, no ads and no spam.

s3-lambda logo s3-lambda

Lambda functions over S3 objects: each, map, reduce, filter
  • Koofr Koofr iOS mobile app
    Koofr iOS mobile app //
    2026-08-20
  • Koofr Koofr iOS mobile app
    Koofr iOS mobile app //
    2026-08-20
  • Koofr Koofr web app
    Koofr web app //
    2026-08-20
  • Koofr Koofr web app
    Koofr web app //
    2026-08-20
  • Koofr Koofr Android mobile app
    Koofr Android mobile app //
    2026-08-20
  • Koofr Koofr desktop app
    Koofr desktop app //
    2026-08-20
  • Koofr Koofr iOS mobile app
    Koofr iOS mobile app //
    2026-08-20

Try Koofr with a free 10GB account and upgrade if needed. Backup your documents, photos, videos and music to Koofr and never lose an important file again.

Koofr is EU based and GDPR compliant. No cookies, no trackers, no ads and no spam. Privacy at its finest.

Access all your files anytime, anywhere through a single, easy to use interface. Connect your existing Dropbox, Google Drive and OneDrive accounts and browse the content with a single application.

Take advantage of automatic backup of photos and videos from your phone to Koofr. No more worrying how to transfer photos from your phone to your PC or to your friends. Simply sync to PC or share them from Koofr.

Look at the photos from your phone on your PC or share that presentation you created at work while you're traveling. You can finally have all your files available to you on the go, without giving up your privacy.

If you need an extra layer of security for your most delicate files, use Koofr Vault. Powerful, open-source, client-side, zero-knowledge encryption add-on.

Get productive with integrated MS Office and collaborate with others on documents. Use automatic transfer of photos and videos from Instagram or Facebook account. Koofr has no limitation on file type or size.

Log in to web application and discover even more amazing features! Sign up now, simplify your life. The cloud has never looked better.

  • s3-lambda Landing page
    Landing page //
    2022-11-04

Koofr

Website
koofr.eu
$ Details
freemium €6 / Annually (10 GB)
Platforms
Windows MacOS Linux iOS Android
Release Date
2012 February
Startup details
Country
Slovenija
Employees
1 - 9

s3-lambda

Website
github.com
Pricing URL
-
$ Details
-
Platforms
-
Release Date
-

Koofr features and specs

  • Privacy and Security
    Koofr is based in Slovenia, complying with strict EU privacy regulations, providing strong data protection and privacy for its users.
  • Automatic Backups
    Koofr supports automatic folder synchronization and backups, ensuring that users' data is consistently up-to-date and secure.
  • Collaboration Tools
    Koofr integrates with MS Office for the web, allowing you to create, view and edit your Word, Excel and Powerpoint documents directly from your account.
  • Sharing & Collaboration
    Sharing with and receive files or folders from anyone, regardless if they are Koofr users or not.
  • No File Size Limits
    Koofr does not impose any limits on file sizes, allowing users to upload large files without any restrictions.
  • Integrations with Other Services
    Koofr offers integration with other cloud storage services like Dropbox, Google Drive, and OneDrive, enabling users to manage different accounts from a single interface.
  • Clean and User-Friendly Interface
    The service provides an intuitive and easy-to-navigate user interface, making it simple for users to manage and access their files.
  • Devices
    Access Koofr through the web (Windows, MacOS, Linux), desktop, mobile (iOS and Android), WebDAV protocol or Rclone.
  • Synchronization
    Synchronise files from your computer and work remotely where ever your are.
  • Zero-Knowledge Encryption
    Use Koofr Vault for extra strong protection. Open source, client-side, zero-knowledge encrypted storage application by Koofr.
  • Facebook & Instagram Integration
    Use Meta’s official transfer tool to export a copy of all your Facebook or Instagram photos and videos to Koofr.
  • Duplicate File Finder
    Find and remove duplicate files inside your Koofr account with ease.
  • Space Optimization
    Keep your data size under control. Use the Space Usage tool to make size analysis of everything you have in your account.

s3-lambda features and specs

  • Batch processing of S3 objects
    s3-lambda provides a straightforward way to perform batch operations on large numbers of S3 objects, enabling map, filter, and reduce-style processing over entire S3 buckets or prefixes without writing boilerplate code.
  • Familiar functional API
    The library uses a functional programming paradigm with operations like map, filter, and reduce, making it intuitive for JavaScript developers to process S3 objects using patterns they already know.
  • Built-in concurrency control
    s3-lambda handles parallel processing of S3 objects with configurable concurrency, allowing users to control how many operations run simultaneously and avoid overwhelming AWS resources or hitting rate limits.
  • Context-aware operations
    The library provides a context object within each operation that includes useful metadata about the current object being processed, simplifying access to S3 object properties during transformations.
  • Easy integration with Lambda
    Designed to work seamlessly within AWS Lambda functions, making it straightforward to set up event-driven, serverless pipelines for processing large volumes of S3 data without managing infrastructure.

Possible disadvantages of s3-lambda

  • Unmaintained project
    The repository appears to be no longer actively maintained, with limited recent commits and unresolved issues, which raises concerns about long-term reliability, security patches, and compatibility with newer AWS SDK versions.
  • Limited documentation
    The project's documentation is relatively sparse, lacking comprehensive examples, edge case handling guidance, and detailed API references, which can make it challenging for new users to adopt effectively.
  • AWS SDK version dependency
    The library depends on an older version of the AWS SDK for JavaScript, which may conflict with projects using the newer AWS SDK v3 and could miss out on performance improvements and features in updated SDKs.
  • Limited error handling flexibility
    The built-in error handling mechanisms are relatively basic, and handling partial failures or implementing sophisticated retry logic for individual object operations requires additional custom code from the developer.
  • Narrow scope of functionality
    The library is tightly focused on S3 object processing and does not integrate with other AWS services or provide utilities beyond basic map/filter/reduce operations, limiting its usefulness in more complex data pipeline scenarios.

Analysis of Koofr

Overall verdict

  • Koofr is a reliable and efficient cloud storage solution, especially appealing for users who prioritize privacy and seek seamless integration with other storage platforms. Its flexible pricing and easy-to-use interface make it a solid choice for users looking for a balance between cost and functionality.

Why this product is good

  • Koofr is considered a good option for individuals and businesses looking for a versatile cloud storage solution. It offers features like integration with other cloud services (such as Dropbox, Google Drive, OneDrive), flexible storage plans, a user-friendly interface, strong privacy policies, and no file size limits. Additionally, Koofr provides excellent cross-platform availability with apps for web, mobile, and desktop, enhancing accessibility and convenience.

Recommended for

  • Individuals needing multi-cloud integrations
  • Privacy-conscious users
  • Small to medium-sized businesses
  • Users requiring cross-platform accessibility
  • Those looking for a simple and intuitive cloud storage solution

Analysis of s3-lambda

Overall verdict

  • s3-lambda is a useful Node.js library for performing operations like map, reduce, and filter directly on S3 objects using Lambda, making it good for developers who need efficient, serverless-based batch processing of S3 data without managing infrastructure. It is well suited for smaller to medium projects but may not be actively maintained for enterprise-scale needs.

Why this product is good

  • Simplifies common S3 batch operations (map, filter, reduce) with a clean, functional API
  • Leverages AWS Lambda for scalable, serverless parallel processing of S3 objects
  • Reduces boilerplate code for iterating over and transforming large numbers of S3 objects
  • Open-source and free to use, allowing customization for specific workflows
  • Integrates well with existing AWS infrastructure and Node.js applications

Recommended for

  • Developers building serverless data pipelines on AWS
  • Teams needing to process or transform large sets of S3 objects without provisioning servers
  • Node.js developers looking for a functional programming approach to S3 operations
  • Projects with batch processing needs that fit within Lambda's execution limits
  • Prototyping or small-to-medium scale ETL tasks involving S3 data

Koofr videos

Koofr: One storage for all.

More videos:

  • Review - What is Koofr?
  • Tutorial - How to generate application-specific passwords in Koofr
  • Tutorial - How to connect Zotero with Koofr via WebDAV

s3-lambda videos

No s3-lambda videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to Koofr and s3-lambda)
Cloud Storage
100 100%
0% 0
Relational Databases
0 0%
100% 100
File Sharing
100 100%
0% 0
Data Dashboard
0 0%
100% 100

Questions & Answers

As answered by people managing Koofr and s3-lambda.

How would you describe the primary audience of your product?

Koofr's answer

Koofr’s primary audience consists of privacy-conscious individuals, professionals, students, and businesses looking for a secure, EU-based alternative to mainstream cloud storage that respects user data ownership and simplifies multi-cloud organization.

What's the story behind your product?

Koofr's answer

Founded over a decade ago in Slovenia (EU), Koofr was created by a group of engineers driven to build a reliable, user-friendly cloud storage solution that prioritizes user privacy over monetization through data exploitation and advertising.

What makes your product unique?

Koofr's answer

Koofr stands out by allowing users to connect external cloud accounts (Google Drive, OneDrive, Dropbox). It follows strict EU privacy standards and goes even further beyond by not using cookies and not storing user data. Koofr’s flexible plans start at just under 5 EUR per year, making it an affordable cloud storage for personal use.

Why should a person choose your product over its competitors?

Koofr's answer

Users choose Koofr for complete data privacy, transparent pricing with no hidden costs, and zero data profiling. Koofr is based in the EU under strict GDPR laws, offers multi-cloud integration, and provides advanced privacy features like client-side encryption via Koofr Vault.

User comments

Share your experience with using Koofr and s3-lambda. For example, how are they different and which one is better?
Log in or Post with

Reviews

These are some of the external sources and on-site user reviews we've used to compare Koofr and s3-lambda

Koofr Reviews

  1. very good for backup of mobile photos

    I've been using Koofr for a couple of years now. I use it because of automatic backup of my mobile photos as well as photos on my facebook and instagram. Also for backup of my PC and for sharing files. It works great.

    Competitors: Filen, pCloud

Best Free Cloud Storage for 2024: What Cloud Storage Providers Offer the Most Free Storage?
Koofr is a small cloud storage company from Slovenia that recently upgraded its free storage plan. You now get 10GB of storage for free, but there’s no achievement or referral program to expand this further. Because of its location in the European Union, all of Koofr’s customers are protected by the GDPR, and the service scores well for both security and privacy.
Best Cloud Storage Services for Linux
Koofr is a cloud storage provider that’s a good option for Linux because of its Linux GUI desktop client. They have an online version, desktop and mobile versions, browser extensions, and more. The best thing about Koofr is that you can connect Google Drive, Dropbox, and OneDrive to your Koofr account and search through all files from all accounts from Koofr.
Source: linuxstans.com
15 Best Rclone Alternatives 2022
Furthermore, Koofr is particular about privacy and security. The tool doesn’t track your activities and file transfer is secured using Secure Sockets Layer (SSL) and Transport Layer Security (TLS) encryption.
The Best Google Drive Alternatives for 2022: Ditching Big Brother
Overall, Koofr is a very good cloud storage service as a private alternative to Google Drive. However, if you’re transitioning from a free Drive account to Koofr, you’ll be disappointed by the lack of free storage, and if you’re used to paying a bit for a Google One subscription, you’ll find Koofr’s price tag a bit steep. That’s why Koofr takes last place on this...
Top 11 Best Dropbox Alternatives in 2020: Which Is The Most Secure?
Sharing lets you email a link, copy and paste it or share directly to Facebook, Twitter, Reddit or Tumblr. You can’t password-protect links when sharing to social networks, but you can otherwise. There’s an option to make links expire, too. Unlike many services, including Dropbox, Koofr even provides those content control features for free users. Read our Koofr review...

s3-lambda Reviews

We have no reviews of s3-lambda yet.
Be the first one to post

Social recommendations and mentions

Based on our record, Koofr seems to be more popular. It has been mentiond 18 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Koofr mentions (18)

View more

s3-lambda mentions (0)

We have not tracked any mentions of s3-lambda yet. Tracking of s3-lambda recommendations started around Mar 2021.

What are some alternatives?

When comparing Koofr and s3-lambda, you can also consider the following products

Dropbox - Online Sync and File Sharing

Google Drive - Access and sync your files anywhere

Mega - Secure File Storage and collaboration

Microsoft OneDrive - Secure access, sharing & file storage

Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.

odrive - odrive aggregates all cloud storage. Access, sync, share, and encrypt everything in one place. Integrations to 20+ storage services, desktop sync, Linux support, placeholder files, zero-knowledge-encryption, web client, advanced sharing, and more!