Where did Mendeley go?

Happy Thanksgiving: Around 5pm yesterday Mendeley services ceased when all of our servers went offline simultaneously; we quickly realised that something was very wrong with our connection to them and this was confirmed by our hosting provider’s customer service calling us to let us know.

Twitter - Victor @ Mendeley- What are the odds

The details are not completely clear at the moment however we do know that the data centre suffered a very serious power outage, and it appears that there were some faults with their back-up generator and batteries too. In summary, we didn’t have much influence: our servers were stuck in the data centre without power, unreachable for around 2 hours, due to issues sadly outside of our control.

After we re-established contact, the process of checking data integrity, restoring backups as necessary, and testing the system took us another 8 hours – although some of us were up much longer doing their very best to ensure everything was back to normal. Well done Ben and Fred – excellent work! I hope you’re having a well deserved lie-in…

Please be aware that if you were syncing your data around 17:12 UTC yesterday then it would be worth checking everything is ok and contacting support if you are having any problems.

As we are growing in size, we continuously work on scaling Mendeley further. However, yesterday’s combination of events borders on the absurd, and if it were a Mr Bean movie, it would have been funny.

Our apologies that Mendeley was away for so long – we will surely have a word with our data center providers…Normal service has now resumed. Enjoy!

100,000 users and 8 million articles

In piphilology, one hundred thousand is the current world record for the number of digits of pi memorized by a human being (well, that’s according to Wikipedia). So, as happy as we are at Mendeley to have 100,000 users onboard, we regret to say that it is now beyond our limits for us to remember every single user on our site (but good to see that you keep on writing and helping to improve Mendeley). In the same week we crossed a second milestone of 8 million research articles uploaded to our database in less than a year. Currently Mendeley’s article database continues to expand as researchers, students and scientists from around the world upload, collaborate and share their research using Mendeley. In April 2009 we reached the 1 million article mark, which means the number of articles in our database has doubled in size every ten to twelve weeks. To give a little context: the world’s largest online research database by Thomson Reuters took 49 years to reach 40 million articles.

A big thank you to Techcrunch’s Sean O’Hear who wrote: “Mendeley could be the largest online research paper database by early 2010” and James Glick from The Next Web who wrote: “Mendeley ‘the last.fm of research’ hits new heights”.

And congratulations to our growing community of users!

Attributed to Jorel314

Image by Jorel314

Mendeley Desktop v0.9.5 Preview Update

Hello – I’d like to give you a quick update on Mendeley Desktop as we work our way towards a ‘1.0’ release.  We’ve been focusing on stability, making Mendeley easier to use and have improved collaborative working amongst other issues.  To get feedback on our work in progress, we publish ‘development preview’ versions every few weeks which contain features and bug fixes that will appear in the next official release.  If you would like to have an early look at what will be in the next version of Mendeley Desktop, you can download the latest development preview which is available on all platforms.  We would greatly appreciate any feedback, good or bad, that you have.  You can contact us about development releases by emailing support-dev@mendeley.com. Alternatively, you can use our feedback forums at http://feedback.mendeley.com (please mention which version you are using).

These preview releases have not been tested as carefully as our official releases, so we advise users to backup their databases before trying out development preview versions of the client using Help -> Create Backup… in Mendeley Desktop.

Highlights since the current official release (

  • User interface improvements (file-type specific icons for attachments, clearer wording in various messages, clearer progress information whilst the desktop is syncing with Mendeley Web, more keyboard shortcuts, fixed a problem where the right-hand Document Details pane could be hidden and it was not obvious how to show it again)
  • Improved support for concurrent updating of document details by users in shared groups.  Tags and keywords changes are now merged correctly and conflict resolution is improved.
  • Importer improvements.  File attachments are now imported from EndNote XML files, more document types and fields are supported by the Bibtex and RIS importers.  Mendeley is now able to guess the type of a file to import if it lacks the appropriate extension.
  • The full text of HTML attachments is now searchable.
  • Improved the stability of the file organiser and search features.
  • Added support for citation disambiguation and super/subscript citations in the Word and OpenOffice.org plugins
  • Faster bibliography generation and citation insertion in Word and OpenOffice.org.
  • Many bug fixes and minor tweaks

For a complete list of changes since the previous development release and since the current stable release please see our release notes page.

Feedback and Support

If you have suggestions for improvements please let us know by visiting the feedback forum. If you encounter any problems using Mendeley or have questions to ask please email support@mendeley.com.

From Climax Control Gel to German Shepherd Dogs: The Top 5 Misspellings of Mendeley

Literacula Nosferatu readingBack during the conceptual phase of the service, Jan, Paul, and Victor were thinking about what to call their product. The working name at the time was “Literacula”, because it sucked the metadata right out of PDFs.

While this was a descriptive name, it was eventually decided that it was far too silly. No one would take them seriously with a silly name like that. What they needed was a distinguished name, a dignified one, steeped in the long history of science. Considering famous scientists through history and the work they’ve done, two names in particular came to mind.

Dmitri MendeleyevThe first person, Mendeleev, was well known for being the one who started a systematization and organization of the elemental forms of matter, eventually coming up with the scaffold of the periodic table, which through its structure allowed patterns to be found and gaps in knowledge to be inferred. This sounded like just the sort of images they wanted to evoke.

Gregor Mendel

The next name was similar – Gregor Mendel, who, despite being a lone monk far from the official walls and financial support of of the academy, was able through careful and diligent study of the humble pea plant to uncover the rules of heredity, the foundation of genetics and one of the most important discoveries science has made to this day. This helped convey their strong support for open access and making the world’s knowledge available outside of institutional walls.

Now, even though Mendeley seems like a distinguished and memorable name, some users – when they hear about “Mendeley” – accidentally misspell it slightly, which can lead to interesting results.

So having had a look at our logs, and speaking from our own experience, here are the 5 most popular misspellings of Mendeley.

Read More »

Nominate Mendeley as Best International Startup at The Crunchies 2009!

It’s the Crunchie Awards season again, and you can help us get on the shortlist for Best International Startup! Just click this badge and submit the nomination on the Crunchies page:


If we get nominated, everybody who voted for us can come to our office and get a kiss from our development team. If you don’t want a kiss, you can also rub their bellies, which brings good luck. Don’t let this chance get away!

Stanford vs Cambridge: The race is on!

I was doing some research to see which universities have the most Mendeley users, when I thought it might be fun to see how these universities have grown day by day, over the last three months. The chart below shows just that: the top 10 Mendeley universities, and the growth in user base in each of these from August 1st to November 1st.

Watch out Stanford! Cambridge is right behind you…

Top 10 Universities

BBC World Service features Mendeley, Wikipedia's Jimmy Wales, Google Wave

The current edition of the BBC World Service’s Digital Planet has a couple of nice interviews with Wikipedia founder Jimmy Wales, Cameron Neylon on Google Wave, and me talking about Mendeley. My segment starts at 7:54mins – I haven’t listened to it because, as I explained earlier, watching/listening to myself makes me cringe like the the people in The Ring (though I don’t instantly die a gruesome death).



A shorter write-up of Cameron’s and my interview is also on the BBC News website: Strength in Science Collaboration.

Bibliographies here, bibliographies there, bibliographies anywhere!

If you are currently a Mendeley Desktop user, you will have already noticed that it comes with built-in plug-ins for Microsoft Word and OpenOffice Writer. These plug-ins are really useful for adding citations to your Word/Writer documents and build your bibliography dynamically.

Now, what if you happen to want to add a bibliography section in a document other than MS Word or OO Writer? No problem, we’ve got that covered! You have two options: copy & paste or drag & drop. Both alternatives are very similar.

First you open Mendeley Desktop and select the list of papers or references you would like to include in your bibliography (You can select as many references as you want). Use the normal multiple selection keys you would use to select multiple files in a folder elsewhere on your computer. In my case I’m a Windows/Linux user, so I press and hold the Ctrl key while I highlight the references I want to include.

Once you have all the desired references selected, you should pick which option you prefer: copy & paste or drag & drop.

Mendeley Desktop

To drag & drop, you simply use your mouse to drag the selected references all at once to your document of choice (text document, blog entry form, Google Doc, e-mail etc.) and drop them where you would like them to be listed. You’ll notice they are nicely numbered and formatted. How convenient!

If you prefer to copy & paste, just simply press Crtl+C or go to the menu option Edit > Copy citation and then paste your reference list wherever you like. Yes, also neatly ordered and formatted!


As mentioned before, you can copy & paste or drag & drop references into virtually any application or location that allows you to write text. Give it a try, use it to add references in your blog post, an email or anywhere else!

And yes, we know how much you long for the Word plugin for Mac… bear with us!