WORLD WEBCERTIFIED ContactContact
REFERENCE DIRECTORY

Digital tools.
Find a useful starting point.

Web standards, software, development, archives and secure communication. Explore 40 selected destinations with their publisher and official domain.

Browse 40 reference websites All subjects
A computer, keyboard, phone and backup drive
A computer, keyboard, phone and backup drive. Illustration generated with AI · Fictional scene.
A DIRECTORY WITH CONTEXT

Digital tools.
40 selected websites.

Web standards, software, development, archives and secure communication. Each listed website retains its own publisher and official destination. Read the individual records in English or switch to their French counterpart.

Compare two or three resources →

EXPLORE BY NEED

Choose a subject.
Then narrow the question.

Browse each subject, compare the resources and open an English record with publisher details and practical checks.

14 websites · bilingual records

Public services

Rights, official procedures, public data and French institutions.

Explore this subject 14 websites · bilingual records

Health and solidarity

Health information, prevention, care and support resources.

Explore this subject 14 websites · bilingual records

Jobs and business

Careers, job search, training, business creation and management.

Explore this subject 30 websites · bilingual records

Education and knowledge

Study guidance, courses, libraries and open knowledge.

Explore this subject 17 websites · bilingual records

News and media

General news, public broadcasting and media literacy.

Explore this subject 14 websites · bilingual records

Culture and heritage

Museums, archives, creative work, events and cultural heritage.

Explore this subject 22 websites · bilingual records

Search and artificial intelligence

Search engines, AI assistants and research tools.

Explore this subject 40 websites · bilingual records

Digital tools

Web standards, software, development, archives and secure communication.

Explore this subject 13 websites · bilingual records

Travel and mobility

Transport, maps, destinations and journey planning.

Explore this subject 15 websites · bilingual records

Consumer and home

Purchases, energy, housing, renovation and consumer protection.

Explore this subject 17 websites · bilingual records

Science and environment

Scientific research, climate, weather, geography and natural risks.

Explore this subject 12 websites · bilingual records

World and international

International institutions, global data and cooperation.

Explore this subject 10 websites · bilingual records

Sport and leisure

Sports organisations, competitions and outdoor activities.

Explore this subject
SELECTED SUBJECT

Digital tools: 40 websites.

Web standards, software, development, archives and secure communication. Each record identifies its publisher and official destination, with related resources and practical checks.

View all 232 websites →

Digital tools · France

ANSSI

Agence nationale de la sécurité des systèmes d’information

Cybersecurity alerts, guidance, publications and services from France's national authority.

Read the record →Visit cyber.gouv.fr ↗
Digital tools · France

CNIL

Commission nationale de l’informatique et des libertés

French guidance on digital rights, data protection, procedures and practical tools.

Read the record →Visit cnil.fr ↗
Digital tools · International

Manuel PHP

PHP Documentation Group

Official PHP documentation, function references, examples and version compatibility.

Read the record →Visit php.net ↗
Digital tools · United States

OWASP

OWASP Foundation

A foundation and open projects for understanding application security, consulting guidance and putting technical risks in context.

Read the record →Visit owasp.org ↗
Digital tools · International

W3C Web Accessibility Initiative

World Wide Web Consortium

Guidance and tutorials for accessible web content, images, forms and media.

Read the record →Visit w3.org ↗
Another website in our network

Continue with a specialist resource

These websites belong to our network. Each has its own editorial scope; check its current information before relying on it.

Connexion Internet FranceGuides to fibre, mobile access and telecommunications.www.connexion-internet-france.fr Française du NumériqueWebsite creation, redesign, content and visibility services.www.francaise-du-numerique.fr
Decision aids

Restoring a backup: which files should you retain?

The newest file is not always enough to restore your data. The backup type determines which components recovery needs.

  1. Identify the backup set
  2. Locate dependencies
  3. Open a restored copy
Restoring a backup: which files should you retain?
SituationWhat changesUseful check
FullCopies all selected data.Check the scope and excluded folders.
IncrementalChanges since the previous backup.Retain the starting full backup and required increments in order.
DifferentialChanges since the latest full backup.Retain the starting full backup and chosen differential.

Test a non-sensitive file in a separate folder without overwriting the original. Record the recovered version and errors. Disconnect the medium after use: a connected copy can also be affected by an incident.

Documentation : Cybermalveillance.gouv.fr — Sauvegardes ↗ · · Read the reference record →

From a resource to usable evidence

Evaluate a tool through to its exported result

Choosing software includes installation, permissions, working format and recovery of the result. Run a representative trial before relying on it for important documents.

Check what a CSV retains

CSV exchanges a text table; it does not represent an entire Calc workbook.

A question to resolve: A workbook contains Data, Calculations and Sources. Does one CSV transmit all three sheets?

Read the documented table and worked explanation →

File one reference under two projects without duplicating it

Within a Zotero library, one item can belong to several collections.

A question to resolve: An item appears in “Essay” and “Thesis”. Should two items be merged?

Read the documented table and worked explanation →

Describe an image according to its function

Alternative text depends on how an image is used in the page.

A question to resolve: A lone magnifying glass starts search. Is “grey magnifier” useful?

Read the documented table and worked explanation →

An archived capture does not date every event on the page

Event, publication, capture and access dates do not describe the same moment. Keep these four references separate when citing an archived page.

A question to resolve: Fictional example: an article dated the 3rd is captured on the 8th and you consult it on the 20th. Which date establishes when the event occurred?

Read the documented table and worked explanation →

Choose the evidence for your task
TaskInformation to retainStarting point
Check a web functionSyntax, version, examples, limitationsMDN Web Docs
Check compatibilityExact feature and target browsersCan I use
Prepare a shared documentWorking format, export, opening testLibreOffice
Check synchronisationAccount, data types and deviceMicrosoft Edge
Check linked devicesDevice list and access still neededWhatsApp
A record worth keeping

Record version, download source, licence, required permissions and export method. Test the final file on the recipient’s platform; opening it in the editor does not validate the exchange.

Test a tool through to the delivered file

You are choosing a tool for a document or project. Check installation, work, export and use by the recipient.

  1. Check provenance

    Locate official download, version, permissions and licence. Distinguish an advertisement from the project destination.

  2. Run a representative trial

    Use a small document containing the required features. Keep its working format.

  3. Check delivery

    Open the export in the recipient’s environment. Check fonts, links, formulas, media and elements that must remain editable.

Useful output

A retained source file, tested export and note on version and settings.

A file opening on its creator’s computer may behave differently for its recipient.

Does open-source software guarantee security?

Licensing and security are separate questions. Inspect provenance, maintenance, version and suitable permissions.

Why test exports?

Fonts, formulas, media and access rights can change during exchange. The recipient needs to be able to use the intended result.

Does uninstalling an app remove its connections?

Check account-associated access separately. Local uninstalling does not describe every service connection.

Put these resources to work

Follow a complete task with sources, checks and a record to keep.

Install software from its publisher

Check publisher, system, file, permissions and a way back before installation.

Follow the pathway →Compare access offers and diagnose Wi-Fi

Separate connection eligibility, contract costs, measured performance and indoor coverage.

Follow the pathway →Publish a more accessible document

Prepare structure, links, alternatives and reading tests before sharing a document or video.

Follow the pathway →

All task pathways →

Which website for which need?

Four concrete starting points.

These resources answer different questions. Match one to your task, then make the suggested check before relying on its result.

MDN Web Docs

Understand a Web feature

Read an HTML, CSS or JavaScript reference with examples.

Check first Check the feature and support in target browsers.

Find MDN Web Docs →
W3C Web Accessibility Initiative

Make content accessible

Find tutorials for images, forms and media.

Check first Test the result through real user journeys, beyond a rule alone.

Find W3C Web Accessibility Initiative →
CNIL

Understand a data protection right

Read the French data authority’s guidance and procedures.

Check first Identify the data controller and the request to send.

Find CNIL →
Documentation Python

Check Python behaviour

Read the language and standard library documentation.

Check first Select the version matching your environment.

Find Documentation Python →
Similar names, different purposes

Choose by the document or action you need.

These comparisons show when two resources in the same subject answer different questions.

Web reference or browser support?

MDN explains HTML, CSS and JavaScript features; Can I Use tracks browser support. Check the feature version and test the journey on the browsers you target.

MDN Web Docs ↓Can I use ↓

Prevention advice or help after an incident?

ANSSI publishes cyber security guidance; Cybermalveillance.gouv.fr helps people affected by attacks. If an account is compromised, record the facts and use the affected service's official recovery route.

ANSSI ↓Cybermalveillance.gouv.fr ↓
FOUR USEFUL CHECKS

From a category
to the right destination.

The portal gives you context before the external click. Current conditions and sensitive instructions must still be confirmed with the destination publisher.

  1. 01
    Choose a subject

    Start with the category that matches your practical need rather than the name of a platform.

  2. 02
    Read the record

    Use the publisher, description, country and topic tags to understand what the resource covers.

  3. 03
    Check the destination

    Confirm that the external domain matches the publisher and service you intended to reach.

  4. 04
    Verify changing details

    Review current dates, prices, availability, terms and sensitive instructions on the destination website.

QUESTIONS

Useful scope.
Clear limits.

What is included in the World Web Certified directory?

The directory contains 232 useful starting-point websites across 13 subjects, including public services, health, education, media, culture, search, digital tools, travel, consumer information, science and sport.

Are directory entries certifications or rankings?

No. Inclusion is an editorial orientation choice, not a technical certification, commercial ranking or guarantee covering every page and service on the external website.

Are the individual records available in English?

Yes. Every directory record has an English page with a description, publisher, official destination, a specific use case and practical checks. Use the language menu to open its French counterpart.

How should I verify an important destination?

Check the domain, publisher and purpose described in the record, then confirm current terms, dates and sensitive information on the destination website before acting.

How can I report an error in a record?

Use the Contact page and provide the relevant URL, the inaccurate passage and a supporting source when possible.