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3DLES offers project management, educational support, building and scripting for educational projects in OpenSim.

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US $15 per month for 45,000 prims on the hypergrid-enabled 3rd Life Grid.

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$15 a month for a 15,000 prim region. In-grid currency, hypergrid, and varregions available.

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$5 per month for a 20,000-prim region on the hypergrid-enabled 92 Miles Grid.

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US$20 a month for a two-by-two 40,000 prim region on the commercial A Life Virtual grid.

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1,000 Gloebits (about US $5) per month for a standard region on the hypergrid-enabled AnonGrid. Free land and varregions also available.

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$35 a month, located on the AnSky grid, for a 15,000-prim region. Hypergrid enabled, Vivox voice.

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ARCH Virtual provides resources and design services to clients using Second Life, OpenSim and Unity3D.

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US $9 per month for a 45,000-prim region on the hypergrid-enabled Atek Grid. No setup fee.

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US$5 a month for a 15,000-prim region on the AviWorlds grid, no setup fee. Hypergrid, Vivox, Kitely Market, varregions available, local AV currency.

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US$13 per month for a 20,000-prim region on the Baller Nation grid. Vivox voice, hypergrid, in-world currency.

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US $6 per month for a 20,000-prim standard region on the hypergrid-enabled Breath in Freedom grid. Variable-sized regions and additional prims also available.

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US$16 (15 Euros) for a 25,000-prim region on the open, hypergrid-enabled, non-profit grid Craft World.

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Creative Twists Designs offers design, building and other services for companies considering Second Life and OpenSim deployments.

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Daden offers consulting, design and building services in virtual worlds, with particular expertise in the areas of web and real world integration, and creating interactive virtual personalities.

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Designing Digitally is a development firm that specializes in virtual worlds, e-learning, and 3D training simulations.

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$15 a month for a 16,000-prim region on the hypergrid-enabled DigiWorldz grid, no setup fee. Private grid hosting also available on request.

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$23 a month for a two-by-two or four-by-four 30,000-prim varregion on the hypergrid-enabled Discovery Grid. Includes Vivox voice and Gloebit currency. 

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US$29 a month for a full region on the German-language social grid Dorenas World.

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Regions start at $30 a month for a 12,000-prim region, with no setup fee. Full grid hosting starts at $45 per month.

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US $8 per month for a 16,000-prim region on the hypergrid-enabled Dynamic Worldz grid. Varregions available.

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US $15 per month for a 15,000-prim region on the Encore Escape grid.

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US $50 for a 20,000-prim region, hypergrid enabled, no setup fee. Free lots and other land sizes also available.

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US $5 for a 15,000-prim region on the hypergrid-enabled Fire and Ice grid, with hypergrid, Gloebits, and varregions. No setup fee.

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US $150 per month for a four-region simulator on the Starlight grid. Building, consulting, and Second Life migration services also available.

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Free clothing, textures, animations and scripts, created by Fleep Tuque.

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US $19.95 for a 15,000-prim region on the closed, commercial German-language GerGrid. No hypergrid.

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US $8.50 for a 20,000-prim region on the hypergrid-enabled GeVolution grid, with a 14-day free trial. Private grids also available, at $150 for the first month and $125 a month after that.

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US $11 (CAD $15) with no setup fee for a 15,000-prim region on the hypergrid-enabled Great Canadian Grid.

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US $9 per month for a 25,000-prim region, with hypergrid, and 10,000-prim regions for $4. Varregions also available.

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The HGExchange multi-grid marketplace delivers products to OSGrid, Haven, Nova, AnSky or MyOpenGrid .

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Jeff Lowe is the maker of the BrainBoard, a collaborative note-taking tool for brainstorming and planning.

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US$19 ($25 AUD) a month with a US$37 ($50 AUD) setup fee for a 15,000-prim region on the education-focused JokaydiaGrid. No currency. Hypergrid-enabled.

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Jon Brouchoud designs virtual environments, 3D experiences and serious game applications in Unity3D, Second Life and OpenSim.

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KatiJack Studio is a virtual design firm specializing in landscaping and building which offers region terrains on its website.

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US $15 a month for a 15,000-prim on-demand region. Easy OAR exports and imports, voice, hypergrid, megaregions.

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A nice starting collection of free skins, hair and textures for OpenSim and Second Life users, all original creations.

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US$20 a month with no setup fee for a 30,000 prim region on Littlefield Grid. Hypergrid, Vivox voice, no currency.

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US$ 9 (8 Euros) a month for a 15,000-prim region on the education-focused, French-language hypergrid-enabled Logicamp grid.

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29 Euros (US $33) a month for up to 45,000 prims. Includes hypergrid, groups and voice. Free varregion upgrade.

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US $20 per month for a 20,000-prim region on the hypergrid-enabled Mobius Grid.

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US $5 for a full region on the hypergrid-enabled Nara’s Nook grid, an author-friendly cooperative.

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Offers furniture, plants, sculpted stairs, wristwatches and a selection of other miscellaneous objects, including scripted vehicles.

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US $5 per month for a 15,000-prim region on the hypergrid-enabled Neverworld Grid.

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US $22 (or 19.95 Euros) for a 15,000-prim region on the hypergrid-enabled German-language NextLife World grid.

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US$12 for a 15,000-prim region on OSgrid, any other open grid, or as a standalone. No setup fees. With Web-based management console, hypergrid, voice.

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Free, large, Creative Commons-licensed content collection, which includes avatars, clothing, furniture, buildings, scripts, plants, terrains, textures, and hair and other attachments.

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US$9.95 for a 20,000-prim region on the hypergrid-enabled Panthera Grid. Larger sizes also available.

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US $45 (40 Euros) for a 15,000-prim region on the Rev World grid that can hold up to 100 visitors. No hypergrid.

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Virtual reality design firm specializing in custom design and development for medical training games and simulations.

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US $10 per month for a 22,500-prim region on the hypergrid-enabled Social Mouse grid.

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US$20 (18 Euro) for a 17,200-prim region on Metropolis or OSgrid. No setup fee. First two weeks free.

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$15 per month for a 15,000-prim varregion region on the Tag Grid, no set up fee.  Can hold up to 100 avatars. Can be sized as a single standard region, a 2×2 varregion or 4×4 varregion. Grid has own online content marketplace. No hypergrid.

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US$15 per month, no setup fee, for a 15,000-prim region. $1 a month per every 1,000 additional prims. Hypergrid enabled.

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US $23 (19.95 Euro) for a 15,000-prim region on The Public World grid. No setup fee. Hypergrid enabled. German language support.

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US$13 (12 Euro) a month for a 15,500-prim region that can hold up to 80 avatars, with no setup fee on on OSgrid, Metropolis or other OpenSim grid.

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US $10 per month for a 20,000-prim residential region on the hypergrid-enabled Tranquility Virtual Grid. Varegions available, as well as Vivox voice and Gloebits currency.

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Virtual world development company working in Second Life and OpenSim.

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US $12 (R$50) for a 25,000-prim region on the hypergrid-enabled, Portuguese-language Vida Dupla grid.

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10 Euro (US $12) for a 15,000-prim region on the hypergrid-enabled Virtual Islands grid.

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US $6 (R$20) for a 15,000-prim region on the hypergrid-enabled, Portuguese-language Virtual Life Brasil grid.

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$9 a month (8 Euros) for a 15,000-prim region on the hypergrid-enabled Virtualife grid, no setup fee. Variable-sized regions also available.

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US $8.95 a month for a 20,000-prim region on the hypergrid-enabled Virtuality Grid.

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US $10 per month for a 15,000-prim region on the open, hypergrid-enabled WestWorld Grid.

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$25 a month for 15,000-prim region, located on OSgrid, Metropolis, MyOpenGrid, or any other open grid, either private or hypergrid-enabled. Mini-grids also available.

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A selection of free textures, terrains, and a handful of starting skins.

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US $14 (12.50 Euros) for a single region with unlimited prims and users and any region configuration. Zetamex also offers private grid hosting with a basic starter package starting at US $198 (175 Euros) a month.

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US $11 (10 Euro) per month for a 15,000-prim region on the hypergrid-enabled ZetaWorlds grid.

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US $15 per month for a 20,000-prim, two-by-two varregion on the hypergrid-enabled Zinraya Grid.