Software Alternatives, Accelerators & Startups

Apache Solr VS Duolingo

Compare Apache Solr VS Duolingo and see what are their differences

Apache Solr logo Apache Solr

Solr is an open source enterprise search server based on Lucene search library, with XML/HTTP and...

Duolingo logo Duolingo

Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
  • Apache Solr Landing page
    Landing page //
    2023-04-28
  • Duolingo Landing page
    Landing page //
    2023-09-19

Duolingo

$ Details
-
Release Date
2011 January
Startup details
Country
United States
State
Pennsylvania
City
Pittsburgh
Founder(s)
Luis von Ahn
Employees
500 - 999

Apache Solr videos

Solr Index - Learn about Inverted Indexes and Apache Solr Indexing

More videos:

  • Review - Solr Web Crawl - Crawl Websites and Search in Apache Solr

Duolingo videos

Duolingo Review: Does it really work?

More videos:

  • Review - ONE THOUSAND (1000) days of Duolingo 🔥 - Was it worth it? (+FULL REVIEW)
  • Review - DUOLINGO Review - What is Duolingo and what do I think about it?

Category Popularity

0-100% (relative to Apache Solr and Duolingo)
Custom Search Engine
100 100%
0% 0
Language Learning
0 0%
100% 100
Custom Search
100 100%
0% 0
Education
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Apache Solr and Duolingo

Apache Solr Reviews

Top 10 Site Search Software Tools & Plugins for 2022
Apache Solr is optimized to handle high-volume traffic and is easy to scale up or down depending on your changing needs. The near real-time indexing capabilities ensure that your content remains fresh and search results are always relevant and updated. For more advanced customization, Apache Solr boasts extensible plug-in architecture so you can easily plug in index and...
5 Open-Source Search Engines For your Website
Apache Solr is the popular, blazing-fast, open-source enterprise search platform built on Apache Lucene. Solr is a standalone search server with a REST-like API. You can put documents in it (called "indexing") via JSON, XML, CSV, or binary over HTTP. You query it via HTTP GET and receive JSON, XML, CSV, or binary results.
Source: vishnuch.tech
Elasticsearch vs. Solr vs. Sphinx: Best Open Source Search Platform Comparison
Solr is not as quick as Elasticsearch and works best for static data (that does not require frequent changing). The reason is due to caches. In Solr, the caches are global, which means that, when even the slightest change happens in the cache, all indexing demands a refresh. This is usually a time-consuming process. In Elastic, on the other hand, the refreshing is made by...
Source: greenice.net
Algolia Review – A Hosted Search API Reviewed
If you’re not 100% satisfied with Algolia, there are always alternative methods to accomplish similar results, such as Solr (open-source & self-hosted) or ElasticSearch (open-source or hosted). Both of these are built on Apache Lucene, and their search syntax is very similar. Amazon Elasticsearch Service provides a fully managed Elasticsearch service which makes it easy to...
Source: getstream.io

Duolingo Reviews

  1. A review

    It's incredibly easy to use and the regular reminder from the app about practicing more keep you consistent. Besides,in my opinion,it also can be not only a tool for learning languages,but a good entertainment for kids too. I've been practicing here almost every day throughout the year and i highly recommend Duolingo:))

    👍 Pros:    I added everything i want to be mentioned above
    👎 Cons:    Perhaps the design may look "too childish" for some adults,but it's only the matter of taste
  2. Pretty good

    Duolingo is a quite nice language learning app for the begginers and for those who want to know a certain language on a pretty good medium level(It's like something between A2-B1,i suppose). Moreover, I'd like to admit it's can be useful for kids as well because the app has cute design and playable interactions , challenges and its own little app - shop where you can buy different bonuses for you ,and in my opinion,children could like an idea of learning languages in a playable form. Though, Duolingo can be rather annoying, when you miss one or two days of studying ,so it'd be really awesome if my brother,for example, who uses this app ,could make his own studying schedule here.

  3. Best Language Learning App
    👍 Pros:    Supports multiple languages|Variety of languages|Tasks|Daily routines

14 Best Duolingo Alternatives to Learn New Languages
Considering that constructed languages such as High Valyrian and Klingon have made it to Duolingo, it’s a bit frustrating that the above languages are still not in the app. And with the now-defunct Duolingo Incubator, you can’t even see if Duolingo plans to add your desired language to their courses.
The 10 Best Duolingo Alternatives You NEED to Try
Although I’ve always loved Duolingo, I’ve always thought that you need to pair it with another app or resource in order to become fluent. Now with the Duolingo Path update, I think many of us are looking for Duolingo alternatives that can fill the void of our beloved Duolingo tree.
10 Duolingo Alternatives to Boost Your Language Skills
Loving Duolingo doesn’t mean your relationship has to be exclusive. Give one of these apps like Duolingo a try!
Source: www.fluentu.com
10 Best language learning apps 2022
Many Duolingo courses are created by native speakers themselves which gave rise to perhaps less expected courses such as Guarani or Klingon. Another feature that makes Duolingo special to me is that it is not aimed solely at an English native speaker. For each language there are specific courses that aim at those with different first languages, which to date produces 81...
2 Great Apps Review: LingoDeer Vs Duolingo
As I already said in my Lingvist Vs Duolingo Review, I really don't like the fact that Duolingo is trying to do too much to give all the options in the world to its users. Sure, it's nice to have both, a smartphone app and the web app. But, I think that is the main reason Duolingo doesn't try harder to fix bugs based on users' complaints. I have sent many reports about the...
Source: ling-app.com

Social recommendations and mentions

Based on our record, Duolingo should be more popular than Apache Solr. It has been mentiond 70 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.

Apache Solr mentions (17)

  • Swirl: An open-source search engine with LLMs and ChatGPT to provide all the answers you need 🌌
    Using the Galaxy UI, knowledge workers can systematically review the best results from all configured services including Apache Solr, ChatGPT, Elastic, OpenSearch, PostgreSQL, Google BigQuery, plus generic HTTP/GET/POST with configurations for premium services like Google's Programmable Search Engine, Miro and Northern Light Research. - Source: dev.to / 10 months ago
  • Looking for software
    Apache Solr can be used to index and search text-based documents. It supports a wide range of file formats including PDFs, Microsoft Office documents, and plain text files. https://solr.apache.org/. Source: about 1 year ago
  • 'google-like' search engine for files on my NAS
    If so, then https://solr.apache.org/ can be a solution, though there's a bit of setup involved. Oh yea, you get to write your own "search interface" too which would end up calling solr's api to find stuff. Source: over 1 year ago
  • Search engine.
    Developers will use their SQL database when searching for specific things like client names, product names, or address search. Now when you want to level up from there and search all tables you better off using a separated server with a specific program like https://solr.apache.org/. Source: almost 2 years ago
  • Search text from PDF files stored in an S3 bucket
    We’re using a self-managed OpenSearch node here, but you can use Lucene, SOLR, ElasticSearch or Atlas Search. Source: almost 2 years ago
View more

Duolingo mentions (70)

  • how gamifying my life helped me build better habits and achieve my goals
    Duolingo: a language-learning app that uses points, levels, and rewards to keep you motivated. This is the most effective when you do it with your friends or a group of people who share your learning goals. I got really addicted to checking my leaderboard rankings everyday. Source: 12 months ago
  • Brushing up on Spanish
    Hi! I wish I'd seen a post like this a few months ago. I would have been interested then. By now it's a little late for me. I just signed up for the 2 week free trial since that's about all the time I have left before I leave. If you can, use a desktop computer/laptop to do duolingo.com and it will have no ads and unlimited hearts! Not as convenient as the app on a phone but saves tons of time and you can do it... Source: 12 months ago
  • What is the best method to learn Japanese?
    If you want a guided course try Memrise or Duolingo. Source: about 1 year ago
  • This is where you can change your avatar to a custom profilephoto!
    I appreciate the energy to help, but if there are 5 posts in a day all on the same topic with the answer 'use duolingo.com' I don't expect anyone who has the "I'll just create a reddit post" idea to find this post and read it, they didn't read any of the others. Source: about 1 year ago
  • [OC] Started learning French over again but this time from Spanish, was curious how different the vocabulary was
    Source: duolingo.com for my vocabulary lists. Source: about 1 year ago
View more

What are some alternatives?

When comparing Apache Solr and Duolingo, you can also consider the following products

ElasticSearch - Elasticsearch is an open source, distributed, RESTful search engine.

Memrise - Learn a new language with games, humorous chatbots and over 30,000 native speaker videos.

Algolia - Algolia's Search API makes it easy to deliver a great search experience in your apps & websites. Algolia Search provides hosted full-text, numerical, faceted and geolocalized search.

Busuu - Join the global language learning community, take language courses to practice reading, writing, listening and speaking and learn a new language. Learn English with busuu's .

Typesense - Typo tolerant, delightfully simple, open source search 🔍

Rosetta Stone - Rosetta Stone is the world's most popular software for learning languages. It is offered at a cost of just $169 when purchased outright, but it is also possible to purchase language programs in a subscription format that offers ongoing support.